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Table of Contents
February 2018
Volume 21 | Issue 2
Page Nos. 125-255
Online since Wednesday, February 21, 2018
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REVIEW ARTICLE
The Intraoral Ultrasonography in Dentistry
p. 125
F Caglayan, IS Bayrakdar
DOI
:10.4103/1119-3077.197016
PMID
:29465043
Ultrasonography (USG) is a diagnostic method that the ultrasonic image is created by ultrahigh-frequency sound waves, which have an acoustic frequency above the threshold of human hearing. Compared to other medical imaging methods, USG has several advantages of being real time, portable, inexpensive, radiation free, and noninvasive. In the medicine, most of the USG applications are transcutaneous. However, intraoral USG has been a relatively rare application, it has recently been drawing more interest. Intraoral USG is also used in dentistry for examining the salivary glands and ducts, as well as the mouth floor, the buccal, labial, and palatal mucosa, the tongue, periodontal tissues, and periapical lesions. The main purpose of this review is to provide detailed information about intraoral USG applications in dentistry.
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ORIGINAL ARTICLES
Antimicrobial Effect of Toothpastes Containing Fluoride, Xylitol, or Xylitol-Probiotic on Salivary
Streptococcus mutans
and
Lactobacillus
in Children
p. 134
EA Maden, C Altun, B Ozmen, F Basak
DOI
:10.4103/njcp.njcp_320_16
PMID
:29465044
Aim:
This
in vivo
study was designed to compare the antimicrobial effect of toothpastes containing fluoride, xylitol, or xylitol-probiotic on
Streptococcus mutans
and
Lactobacillus
in 13-15-year-old children.
Materials and Methods:
The study consisted of 60 pediatric patients who were randomly divided into three groups of 20 each. Group 1 recieved fluoride toothpaste (Colgate Max Fresh), group 2 used xylitol toothpaste (Xyliwhite), and group 3 used xylitol-probiotic toothpaste (PerioBiotic). Participants were asked to use the allocated dentifrice two times a day for 6 weeks. We performed tests on the saliva samples at the beginning of the study and after 6 weeks' duration following the use of toothpaste. The Statistical Package for the Social Sciences version 15 software and chi-square test were used for data analysis.
Results:
PerioBiotic toothpaste and Colgate Max Fresh toothpaste showed significant reduction in the number of participants who, prior to commencing the study, were diagnosed with a high number of cariogenic bacteria. On the contrary, no significant changes were observed with respect to the number of participants with a very high number of
S. mutans
and
Lactobacillus
on Xyliwhite toothpaste group.
Conclusion:
In the light of the data obtained in this
in-vivo
study, a new innovational aspect has been reached in the use of probiotics to ensure the balance between bacterial flora in the oral cavity. In daily routine, the administration of probiotics to children is difficult. The toothpaste can be used as a vehicle to transport probiotics to children's mouth.
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Sugammadex Improves Neuromuscular Function in Patients Receiving Perioperative Steroids
p. 139
AB Ozer, E Bolat, OL Erhan, M Kilinc, I Demirel, G Caglar Toprak
DOI
:10.4103/njcp.njcp_322_16
PMID
:29465045
Context:
Sugammadex has steroid-encapsulating effect.
Aim:
This study was undertaken to assess whether the clinical efficacy of sugammadex was altered by the administration of steroids.
Setting and Design:
Sixty patients between 18 and 60 years of age with the American Society of Anesthesiologists I–IV and undergoing elective direct laryngoscopy/biopsy were included in this study.
Materials and Methods:
Patients were assigned to two groups based on the intraoperative steroid use: those who received steroid (Group S) and who did not (Group C). After standard general anesthesia, patients were monitored with the train of four (TOF) monitoring. The preferred steroid and its dose, timing of steroid administration, and TOF value before and after sugammadex as well as the time to recovery (TOF of 0.9) were recorded.
Statistical Analysis Used:
SPSS software version 17.0 was used for statistical analysis.
Results:
There is no statistically significant difference between groups in terms of age, gender, preoperative medication use, and TOF ratio just before administering sugammadex. The reached time to TOF 0.9 after sugammadex administration was significantly shorter in Group S than Group C (
P
< 0.05). A within-group comparison in Group S showed no difference in TOF ratio immediately before sugammadex as well as the dose of sugammadex in those who received prednisolone; time to TOF 0.9 was higher in prednisolone receivers as compared to dexamethasone receivers (
P
< 0.05).
Conclusion:
In patients receiving steroids, and particularly dexamethasone, an earlier reversal of neuromuscular block by sugammadex was found, in contrast with what one expect. Further studies are required to determine the cause of this effect which is probably due to a potential interaction between sugammadex and steroids.
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Clinical and Laboratory Features of Metformin Intoxication in Suicidal Patients Attending an Intensive Care Unit
p. 143
A Cetinkaya, D Avci, A Erden, O Akca, O Ozer, U Kalan, AI Gunal
DOI
:10.4103/njcp.njcp_343_16
PMID
:29465046
Introduction:
This study has been performed for the purpose of researching the complications occurred at patients who took metformin overdose in an attempt to suicide. None of the patients has the diagnosis of diabetes mellitus and never used metformin.
Materials and Methods:
This retrospective cross-sectional study was carried out with 21 patients who has neither diagnosed diabetes mellitus nor taken metformin for suicide before.
Results:
It was observed that there is a moderate, negative (
r
= −0.63) statistically significant correlation (
P
< 0.001) between the time of applying to the hospital and arterial blood pH at the arrival and a statistically significant positive mild correlation (
P
< 0.041) between applying and blood lactate level (
r
= 0.45), and a moderate positive (
r
= 0.63) and statistically significant correlation (
P
< 0.001) between the total metformin dose and blood lactate level at the arrival and a positive, moderate (
r
= 0.68) significant correlation (
P
< 0.001) between the creatinine and metformin dose at the arrival. Lactic acidosis has been detected at 8 of 21 patients, 6 patients were hemodialized, 2 patients needed mechanical ventilation, and 2 patients died. It is observed that there is no mortality for early hemodialized patients.
Conclusion:
The most important reason of the mortality in patients who has metformin intoxication is metformin-associated lactic acidosis (MALA). It was considered that hemodialysis therapy could be effective in MALA.
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Knowledge and Practice of Standard Precautions by Health-Care Workers in a Tertiary Health Institution in Enugu, Nigeria
p. 149
SU Arinze-Onyia, AC Ndu, EN Aguwa, I Modebe, UN Nwamoh
DOI
:10.4103/njcp.njcp_69_17
PMID
:29465047
Background:
Standard precautions (SPs) are crucial in protecting both health-care workers (HCWs) and patients from nosocomial infections. This study assessed the knowledge and practices of SP among HCWs in tertiary health-care facilities.
Methods:
This descriptive study was done in October 2014 among 629 HCWs at the University of Nigeria Teaching Hospital, Ituku-Ozalla, Enugu State. A pretested questionnaire was used and analysis done using SPSS version 13.
Results:
The HCWs studied were 629, mostly females (64.4%), married (62.3%), Christians (94%), and within 20–59 years. Majority were nurses (46.1%) working in the wards. Over 90% of respondents had heard of SP, mainly from formal training (62%). Over 70% could define SP, 74.6% had knowledge of when SP is needed and >70% identified most components of SP. Over 90% agreed that SPs are useful and that employers should provide SP training. Most respondents washed hands after removal of gloves (73.6%) and before leaving patient's care area (33.1%). More than 70% had been exposed to patient's body fluids and washed the exposed part with water, soap, and disinfectant (52.1%). Gloves were the most commonly used personal protective equipment (PPE) (53.4%) and the major reason for inconsistent use was irregular access (57.7%). Over 50% recap needles before discarding. Exposure to patients' serum was significantly higher among doctors and nurses
P
< 0.05, while the use of PPEs was highest among the laboratory scientists (82.4%). Those who were trained on SP (70.8%) and PPE (69.7) were significantly more likely to use PPEs,
P
< 0.05.
Conclusions:
SP training and regular provision of PPEs are vital in compliance to SP.
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Evaluation of Teeth Development in Unilateral Cleft Lip and Palate Patients in Mixed Dentition by Using Medical Image Control Systems
p. 156
O Gezgin, MS Botsali
DOI
:10.4103/njcp.njcp_399_16
PMID
:29465048
Objectives:
The aim of this study was to evaluate the crown and root development in patients with cleft lip and palate using medical software programmes.
Materials and Methods:
In our study, 25 patients with mixed dentition unilateral cleft lip and palate were examined with cone-beam computed tomography (CBCT). The tomography images obtained as high resolution medical images on the computer control system (MIMICS 15.0, Materialise, Leuven, Belgium and SOLIDWORKS 2014 Premium, Concord, Massachusetts) were converted to three-dimensional volumetric images. These three-dimensional images of the cleft on the sides of the teeth in the crown and root growth were measured by mesiodistal length and crown/root rate with volume and area. These measurements were compared with a control group of healthy individuals.
Results:
There were no statistically significant differences in the volume, surface area and MD size, crown/root ratio of central incisor, canine, first premolar and second premolar teeth within defect, and healthy teeth. However, it was found that there was a significant difference between the volume, surface area and MD size, and crown/root ratio of the lateral teeth in each group.
Conclusion:
In particular, among patients with cleft lip and palate, on obtaining a solid model of the tooth structure by using these programs, tooth development can be examined in more detail, diagnosis can be made more reliable, as well as in treatment planning. We believe that these programs can be used to resolve certain limitations such as a lack of an application to be used in routine dental treatment and in particular the need to do more study.
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The Effect on Survival and Mortality of the Highest SUVmax Value on Metastatic Foci in Postoperative Kidney Tumors
p. 163
H Komek, S Altindag, C Can, N Aguloglu, H Morcali, F Kepenek, H Karaoglan
DOI
:10.4103/njcp.njcp_302_16
PMID
:29465049
Objective:
One-third of patients newly diagnosed with a kidney tumor have metachoronous disease, 25-50% have synchronous metastasis, and approximately 30-40% of patients have metastasis at the time of diagnosis. Metastasis mostly occurs in the lungs, regional lymph nodes, bones, and liver. The present study was aimed to determine the effect on mortality the values of standard uptake value (SUV)max measured with positron emission tomography (PET) in metastases of kidney tumors.
Material and Methods:
A retrospective review was conducted of the files of 77 patients newly diagnosed with kidney tumor and disease staging determined with PET in the Nuclear medicine Department of Saglik Bilimleri University Diyarbakir Gazi Yasargil Training and Research Hospital between August 2007 and April 2012. The gender, age, histological types, metastases, SUVmax values, and dates of death of the patients were recorded in the SPSS software.
Results:
It was observed that higher SUVmax values indicated a shorter survival time (
r
= .303) (
P
= 0.022). Patients with metastasis lived for a shorter period (
P
< 0.001), particularly those with liver metastasis (
r
= .515) (
P
= 0.049). Metastases were most frequently seen in lymph nodes (42.1%); the SUVmax values of lung metastases were higher (
P
= 0.025) and papillary carcinomas showed higher SUVmax uptake (
P
= 0.015).
Conclusions:
In the present study, it was concluded that the higher the SUVmax value the shorter the survival time. The survival time of patients with metastasis was shorter, and this could be estimated through the measured SUVmax values.
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Antibacterial Effect of Surface Pretreatment Techniques against
Streptococcus Mutans
p. 170
HS Sancakli, SH Siso, SO Yildiz, YB Gökçe
DOI
:10.4103/njcp.njcp_98_16
PMID
:29465050
Objective:
The aim of this study was to evaluate the antibacterial surface pretreatment methods against
Streptococcus mutans
within the infected dentin surface using a tooth cavity model.
Material and Methods:
Seventy-two cavities were prepared on caries-free third molars (
n
= 8). After sterilization, teeth were inoculated with
S. mutans
for 48 h. One cavity of each tooth was used to evaluate the infection. Following inoculation, infected cavity surfaces were treated either with (1) Er:YAG Laser (1W; 5x5s, Smart 2940D Plus, Deka Laser), (2) Ozone (80s; HealOzone, Kavo), (3) ErYAG-Ozone combination, (4) Er:YAG-Ozone-CHX combination, (5) Chlorhexidine (CHX), (6) Clearfil Protect Bond (PB), (7) potassium-titanyl-phosphate (KTP) Laser (1W; 60 s, SMARTLITE D, Deka Laser), (8) KTP-Ozone combination, and (9) KTP-Ozone-CHX. Standardized amounts of dentin chips were obtained from the cavity walls, and the number of bacteria recovered was counted. Kruskal–Wallis test was used for statistical analyzes.
Results:
Both sole antibacterial materials, CHX or Protect Bond application, exhibited the most effective antibacterial activity with 125 and 156 CFU is an acronym of “colony forming unit” usullay mentioned by acronym. (CFU/ml), respectively, among the groups evaluated (
P
< 0.05). Er:YAG laser irradiation and its combinations with other antibacterial surface pretreatment applications also inhibited the bacterial growth with, respectively, 1444, 406, and 294 CFU/ml bacterial recovery being more efficient than KTP laser irradiation and ozone combinations.
Conclusions:
As an alternative device with photodynamic effects, Er:YAG and KTP laser irradiations and their further combinations during the cavity pretreatment procedure with chlorhexidine and ozone treatments exerted antibacterial effect against
S. mutans
, whereas chlorhexidine and antibacterial dentin bonding application solely have the highest antibacterial effects.
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Resistance Pattern and Detection of Metallo-beta-lactamase Genes in Clinical Isolates of
Pseudomonas aeruginosa
in a Central Nigeria Tertiary Hospital
p. 176
KO Zubair, KC Iregbu
DOI
:10.4103/njcp.njcp_229_17
PMID
:29465051
Background:
Acquired metallo-β-lactamases (MBLs) pose serious problem both in terms of treatment and infection control in the hospitals and report across the world showed an increase in their prevalence. However, there is a paucity of data from Africa, and their report is rare in Nigeria.
Aim:
This study aimed to determine the prevalence of acquired MBL-resistant genes in carbapenem-resistant
Pseudomonas aeruginosa
in Abuja, North Central Nigeria.
Materials and Methods:
Two hundred nonduplicate, consecutive isolates of
P. aeruginosa
from clinical samples submitted to the Medical Microbiology Laboratory of National Hospital, Abuja were screened for carbapenem resistance using imipenem and meropenem. Phenotypic detection of MBL-producing strains was determined using Total MBL confirm kits and E-test strips on isolates that were resistant to both Imipenem and meropenem. The MBL genes were detected using multiplex polymerase chain reaction, while the gene variant was determined by sequencing.
Results:
Twenty-two MBL-producing strains were detected phenotypically, but only 5 harbored the blaVIM-1 gene, giving a prevalence of 2.5%. These 5 strains were resistant to all the antipseudomonal antibiotics tested except Aztreonam and Colistin. Other common MBL-genes were not detected.
Conclusion:
The prevalence of MBL-producing strains of
P. aeruginosa
which poses serious challenge for therapeutics and infection control is currently low in Abuja, North Central, Nigeria. Therefore, rational use of the carbapenems and other antipseudomonal antibiotics, regular surveillance and adequate infection control measures should be instituted to limit further spread.
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Nasotracheal Intubation in Children for Outpatient Dental Surgery: Is Fiberoptic Bronchoscopy Useful?
p. 183
AS Ozkan, S Akbas
DOI
:10.4103/njcp.njcp_441_16
PMID
:29465052
Background:
The aim of our study was to compare the hemodynamic responses and adverse events associated with nasotracheal intubation (NTI) using a fiberoptic bronchoscope (FOB) and a direct laryngoscope (DLS) in children undergoing general anesthesia for outpatient dental surgery.
Methods:
Eighty children (aged 5–15 years) were scheduled to undergo outpatient dental surgery under general anesthesia and of these children those who required NTI were included.
Results:
NTI was significantly longer in the FOB group (
P
= 0.03). In both groups, systolic blood pressure (SBP) and heart rate (HR) significantly decreased after the induction of anesthesia when compared with the baseline values. SBP was significantly higher in both groups at intubation and 1 and 3 min after intubation when compared with postinduction. SBP significantly increased in the DLS group compared with the FOB group at intubation and 1 min after intubation. HR was significantly increased at intubation and 1 min after intubation in the DLS group compared with the FOB group. Nose bleeding after intubation was significantly more frequent in the DLS group (30%) than in the FOB group (7.5%) (
P
= 0.034). The incidence of sore throat 24 h after surgery was 20% (8/40) in the DLS group and 2.5% (1/40) in the FOB group (
P
= 0.014).
Conclusions:
There are fewer hemodynamic responses and adverse events in the FOB group than in the DLS group; therefore, FOB can be safely used for NTI in children undergoing outpatient dental surgery, and FOB may be more successful than DLS for NTI.
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Erythropoietic Response to Anaemia of Dialysis Naïve Patients with Chronic Kidney Disease in Zaria, North-West Nigeria
p. 189
LG Dogara, A Hassan, S Awwalu, L Okpetu, AD Waziri, AA Babadoko, IB Bosan, HM Muktar
DOI
:10.4103/njcp.njcp_208_17
PMID
:29465053
Introduction:
Chronic kidney disease (CKD) is a global health problem with an increasing prevalence worldwide. Anemia is one of its consistent and severe hematological complications although its mechanism is not fully elucidated. The primary defect could manifest as serum erythropoietin (sEPO) deficiency or EPO resistance. We set out to determine the erythropoietic response to anemia of patients with CKD and its relationship with their iron status in a cross-sectional descriptive study of 91 patients in various stages of CKD. Materials and Methods: Soluble transferrin receptor (sTfR), sEpo, and serum ferritin levels were determined using ELISA method (Diagnostic Automation Inc and WKEA med supplies corp.). Data generated were analyzed using Epi Info version 3.5.3 and level of statistical significance was set at ≤0.05. Results: Participants comprised of 50 females (54.9%) and 41 (45.1%) males with an overall mean age of 47 ± 15 years. The major causes of CKD were hypertension (HTN) (50.54%), diabetes mellitus (DM) (6.59%), and HTN + DM (19.78%). The mean hemoglobin (Hb) concentration of the participants was 10.97 ± 2.28 g/dl; the red cell indices were within normal ranges except for Red cell distribution width-Coefficient of variation (%) which was elevated (16.29%). The mean serum ferritin, sTfR, and sEpo were 70.58 ± 46.44 ng/ml (interquartile range [IQR] 82.00), 22.9 ± 49.7 ng/ml (IQR 15.00), and 12.49 ± 33.47 IU/L (IQR 6.00), respectively, with a high variance. Serum ferritin and sTfR are consistently low across the stages of CKD (range between 54.54 ng/ml and 88.64 ng/ml), but sEPO for stage 3 and 4 showed a 2-fold increase when compared to normal level at Hb 10.97 g/dl (29.54 IU/L and 38.83 IU/L, respectively). Correlation between sTfR and sEpo (
r
2
= 0.96,
P
= 0.001), while between sEpo and serum ferritin (
r
2
= 0.02,
P
= 0.185), and between Hb and stage of CKD undulating (
r
2
= 0.41,
P
= 0.001).
Conclusion:
In contrast to some existing literature, this study has demonstrated that EPO resistance and iron deficiency contributes to anemia in CKD and serum ferritin can be used to assess the iron level of dialysis naïve CKD patients at every stage of the disease.
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Evaluation of the School Environment of Public and Private Schools in Enugu to Ensure Child Health Promotion
p. 195
AI Bisi-Onyemaechi, NA Akani, AN Ikefuna, BN Tagbo, JM Chinawa
DOI
:10.4103/njcp.njcp_224_17
PMID
:29465054
Objectives:
Poor maintenance of school environment can cause or worsen illnesses among schoolchildren. The objective of this study was to assess the healthfulness of school environments of primary schools in Enugu East, Nigeria, and to compare the difference if any between public and private schools.
Study Design:
This was a cross-sectional noninterventional study of the school environments in Enugu East, Nigeria.
Methods:
Multistage sampling method was used to select the sample population. The participating schools were inspected and their head teachers were interviewed using a questionnaire. Scores were awarded using the School Health Program Evaluation scale. Results: Thirty-three schools were studied. The most common source of water for most schools was well. Eleven schools dump refuse openly. Three public schools only had functional toilets. All public schools were adequately ventilated and lit. One private school had a foodservice area. Ten schools did not have a play field, while three public schools had soaps for handwashing. The mean scores for public and private schools were 33.00 and 37.86, respectively. Three schools only attained the minimum score of 57 of a maximum of 66.
Conclusion:
The environment of primary schools in Enugu east, Nigeria, is unhealthy and unfriendly and currently cannot promote and protect the health of the schoolchildren.
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Evaluation of the Effect of Platelet-Rich Fibrin on the Alveolar Osteitis Incidence and Periodontal Probing Depth after Extracting Partially Erupted Mandibular Third Molars Extraction
p. 201
H Unsal, GN H Erbasar
DOI
:10.4103/njcp.njcp_1_17
PMID
:29465055
Aims:
To evaluate whether the alveolar osteitis (AO) incidence after extracting partially erupted third molars differs when platelet-rich fibrin (PRF) is administered in the alveolar socket and to assess the influence of PRF on postoperative pain levels and periodontal probing depth.
Settings and Design:
In this split-mouth randomized study, 50 patients (17 men/ 33 women; mean age, 23.96 years) with bilateral symmetric partially erupted mandibular third molars were enrolled.
Material and Methods:
PRF was randomly placed in one extraction socket, whereas the other socket was left empty. A verbal rating scale was used to evaluate postoperative pain levels. AO development was evaluated on the 7th postoperative day. At 3 months postoperatively, periodontal probing depth was measured on the distal surface of the second molars.
Results:
In total, 8% of patients in the PRF group and 18% of the patients in the control group were diagnosed with AO. None of the smokers in the PRF group and 37.5% smokers in the control group were diagnosed with AO. Mean postoperative pain levels were lower in the PRF group than in the control group at all time points. At 3 months postoperatively, periodontal probing depths were found to be ≤3 mm in both groups.
Conclusions:
PRF significantly reduced the AO incidence among smokers and had a positive effect on postoperative pain levels but not on periodontal healing.
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Effects of Inferior Alveolar Nerve Neurosensory Deficits on Quality of Life
p. 206
M Cakir, İ R Karaca, E Peker, F Ogütlü
DOI
:10.4103/njcp.njcp_408_16
PMID
:29465056
Objective:
The purpose of this study was to investigate the effect of temporary or persistent neurosensory disturbance of the inferior alveolar nerve (IAN) on the quality of life using Oral Health Impact Profile (OHIP-14) questionnaire.
Methods:
The patients with the neurosensory deficit of the IAN that was confirmed by subjective and objective neurosensory tests formed the study group. The patients who had dental or oral and maxillofacial surgery procedures in the same unit and did not present neurosensory deficit were matched with the study group according to their gender and age and were presented as the control group. Both groups filled OHIP-14 questionnaire.
Results:
This study included 200 patients (122 female and 78 male), aged between 18 and 75 years. Kolmogrov–Smirnov, Levene, Mann-Whitney U, and Kruskal Wallis tests were used for statistical analysis. In study group, the average OHIP-14 scores were higher in women than in men in physical pain and handicap subgroups. There were significant differences between study and control groups in functional limitation, psychological discomfort, psychological disability, and handicap subgroups. The OHIP-14 scores were higher in study group compared with the control group.
Conclusion:
It was concluded that the patients with the neurosensory deficit of the IAN have a poorer quality of life than those without neurosensory deficits.
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The Role of Diffusion-Weighted Magnetic Resonance Imaging in the Differential Diagnosis of Simple and Hydatid Cysts of the Liver
p. 212
S Aksoy, I Erdil, E Hocaoglu, E Inci, GT Adas, O Kemik, R Turkay
DOI
:10.4103/njcp.njcp_296_16
PMID
:29465057
Introduction:
The present study indicates that simple and hydatid cysts in liver are a common health problem in Turkey. The aim of the study is to differentiate different types of hydatid cysts from simple cysts by using diffusion-weighted images.
Materials and Methods:
In total, 37 hydatid cysts and 36 simple cysts in the liver were diagnosed. We retrospectively reviewed the medical records of the patients who had both ultrasonography and magnetic resonance imaging. We measured apparent diffusion coefficient (ADC) values of all the cysts and then compared the findings.
Results:
There was no statistically meaningful difference between the ADC values of simple cysts and type 1 hydatid cysts. However, for the other types of hydatid cysts, it is possible to differentiate hydatid cysts from simple cysts using the ADC values.
Conclusion:
Although in our study we cannot differentiate between type I hydatid cysts and simple cysts in the liver, diffusion-weighted images are very useful to differentiate different types of hydatid cysts from simple cysts using the ADC values.
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Beneficial Therapeutic Effects of Sildenafil on Bone Healing in Animals Treated with Bisphosphonate
p. 217
C Bereket, I Sener, N Cakir-Özkan, ME Önger, AV Polat
DOI
:10.4103/njcp.njcp_172_16
PMID
:29465058
Objectives:
The purpose of the present study was to evaluate the effects of sildenafil on mandibular fracture healing in animals treated with zoledronic acid by using histologic, histomorphometric, immunohistochemical, and radiodensitometric methods.
Materials and Methods:
A total of 36 Sprague–Dawley rats (3 months old) were used. All animals were treated intraperitoneally with 0.1 mg/kg zoledronate three times per week, for a total of 8 weeks. Postoperatively, the animals were divided into two groups: zoledronate group (Z), which had no treatment applied (
n
= 18), and zoledronate + sildenafil (ZS), which were treated daily with 10 mg/kg sildenafil (
n
= 18). Each group was divided into two subgroups and the animals were sacrificed at the end of week 1 (Z1 and ZS1,
n
= 9) and week 4 (Z4 and ZS4,
n
= 9) after the operation. Histologic, histomorphometric, immunohistochemical analysis, and radiodensitometry were performed on the test subjects.
Results:
Sildenafil-treated groups showed a significant increase in fracture healing scores. This result was supported by the densitometric, histologic, histomorphometric, and immunohistochemical findings.
Conclusions:
Sildenafil may have positive effects on accelerating and improving fracture healing, and it may be used as a supporting factor in bone healing in patients treated with bisphosphonate (BP) to prevent negative effects of BP's
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Efficiency of Lasers and a Desensitizer Agent on Dentin Hypersensitivity Treatment: A Clinical Study
p. 225
K Ozlem, GM Esad, A Ayse, U Aslihan
DOI
:10.4103/njcp.njcp_411_16
PMID
:29465059
Aim:
The aim of this clinical study was to determine and compare the efficiency of the glutaraldehyde-containing agent (GCA), Nd:YAG, Er,Cr:YSGG lasers, and the combination of them on the dentin hypersensitivity (DH) treatment.
Subjects and Methods:
This study was performed with the participation of 17 healthy adult patients having 100 teeth with DH; the patients were randomly divided into five groups according to the treatment protocol: (1) application of GCA on sensitive teeth, (2) Nd:YAG laser (1 W/cm
2
, 10 Hz) irradiation on sensitive teeth, (3) application of GCA on sensitive teeth and then Nd:YAG laser irradiation, (4) Er,Cr:YSGG laser (0.25 W/cm
2
, 20 Hz) irradiation on sensitive teeth, (5) application of GCA on sensitive teeth and then Er,Cr:YSGG laser irradiation. Sensitivity levels were assessed by the Yeaple probe on the buccal surfaces of the teeth at a force setting of 10 g. Measurements were performed for 30 min, after 7, 90, and 180 days of the therapy to assess the effects of desensitization. The evaluations were analyzed using the one-way analysis of variance and repeated measurement test (
P
< 0.05).
Results:
After sessions, DH was significantly reduced in all groups at each measurement point. The Er,Cr:YSGG laser with or without GCA application were the most effective ones in DH treatment (
P
< 0.05). Comparison of the treatment regimens demonstrated that the scores achieved with the Yeaple probe were not significantly higher for the Nd:YAG laser groups than the GCA alone group.
Conclusions:
This clinical study shows that the Er,Cr:YSGG laser have promising potential for the treatment of DH.
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Cyclic Fatigue Resistance of Novel Rotary Files Manufactured from Different Thermal Treated Nickel–Titanium Wires in Artificial Canals
p. 231
E Karataslioglu, U Aydın, C Yıldırım
DOI
:10.4103/njcp.njcp_296_16
PMID
:29465057
Aims:
The aim of this in vitro study was to compare the static cyclic fatigue resistance of thermal treated rotary files with a conventional nickel-titanium (NiTi) rotary file.
Subjects and Methods:
Four groups of 60 rotary files with similar file dimensions, geometries, and motion were selected. Groups were set as HyFlex Group [controlled memory wire (CM-Wire)], ProfileVortex Group (M-Wire), Twisted File Group (R-Phase Wire), and OneShape Group (conventional NiTi wire)] and tested using a custom-made static cyclic fatigue testing apparatus. The fracture time and fragment length of the each file was also recorded. Statistical analysis was performed using one-way analysis of variance and Tukey's test at the 95% confidence level (
P
= 0.05).
Results:
The HyFlex group had a significantly higher mean cyclic fatigue resistance than the other three groups (
P
< 0.001). The OneShape groups had the least fatigue resistance.
Conclusions:
CM-Wire alloy represented the best performance in cyclic fatigue resistance, and NiTi alloy in R-Phase had the second highest fatigue resistance. CM and R-Phase manufacturing technology processed to the conventional NiTi alloy enhance the cyclic fatigue resistance of files that have similar design and size. M-wire alloy did not show any superiority in cyclic fatigue resistance when compared with conventional NiTi wire.
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Evaluation of Brain Volume Changes by Magnetic Resonance Imaging in Obstructive Sleep Apnea Syndrome
p. 236
SB Ozturk, AB Öztürk, G Soker, M Parlak
DOI
:10.4103/njcp.njcp_379_16
PMID
:29465061
Background and Objectives:
The objective of this study was to evaluate potential morphological changes in the brain tissue of patients with severe obstructive sleep apnea syndrome (OSAS) in comparison with normal subjects by using T1-weighted magnetic resonance imaging (MRI) technique.
Material and Methods:
This study comprised subjects with severe OSAS with an apnea-hypopnea index (AHI) more than 30 and normal subjects with AHI less than 5 according to polysomnography findings. The study subjects were evaluated using Three Dimensional Magnetization Prepared Rapid Acquisition Gradient Echo sequence on T1-weighted MRI. FreeSurfer morphometric procedure was used as the automated segmentation method and in both cerebral and cerebellar hemsipheres and segmental volumes of brain were analyzed.
Results:
Of the 22 patients with severe OSAS, 19 were male, three were female and their ages ranged between 40 and 60 years (mean age 50.27 ± 5.3 years). Of the 22 control subjects 19 were male, three were female and their ages ranged between 40 and 60 years (mean age 49.36 ± 6.95 years). There were no statistically significant differences in terms of age and sex properties between the groups. There was a statistically significant difference in BMI between the OSAS patients and the control group. There were statistically significant differences in polysomnographic features (time elapsed below 90% SaO
2
(min), Epworth Sleepiness Scale, AHI, mean minimum SaO
2
(%), mean O
2
desaturation (%), and arousal index values) between the OSAS patients and the control group.
Conclusions:
The findings of our study indicated that even if severe, no structural changes occur in the course of mild, moderate, and severe OSAS.
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Microleakage of Different Adhesive Systems in Primary Molars Prepared by Er: YAG Laser or bur
p. 242
IO Kalyoncu, F Eren-Giray, N Huroglu, E Egil, I Tanboga
DOI
:10.4103/njcp.njcp_299_16
PMID
:29465062
Background and aim:
This study aimed to examine the microleakage of class V cavities of primary molars prepared by either a conventional dental bur or Er:YAG laser and one of two different adhesive systems.
Methods:
A total of 50 tooth samples from primary molars were used in this study. They were randomly assigned into five experimental groups of 10 samples each, according to the cavity preparation technique and the type of adhesive system applied to the cavities. Following cavity preparation, etching, bonding, and filling steps, samples were dyed using basic fuchsine and were sectioned longitudinally in buccolingual direction. Percentages of dye penetration at gingival and occlusal margins were calculated for each group.
Results:
Overall, microleakage scores of gingival margins were significantly higher than those of occlusal margins (
P
< 0.001). The group that underwent laser preparation, laser etch, and self-etch bonding procedures had worse microleakage scores for gingival margins. However, all groups had similar occlusal scores (
P
> 0.05).
Conclusion:
Self-etch bonding systems and cavity preparation with Er:YAG laser may be an alternative to conventional restoration of primary molars with compomers. Further studies are warranted to fully elucidate the effect of laser-based etching techniques in cavities prepared by laser.
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CASE REPORTS
Posterior Reversible Encephalopathy Syndrome in the Emergency Service
p. 248
M Yigit, E Yigit, KA Turkdogan
DOI
:10.4103/njcp.njcp_120_16
PMID
:29465063
Posterior reversible encephalopathy syndrome (PRES) is an entity characterized by headache, altered mental status, seizures, visual disturbances, and focal neurological signs. The most common etiologies of PRES are hypertension and renal failure, and the most frequent pathophysiology is hyperperfusion. PRES is generally symmetrical, often in the occipital and parietal lobes, and is typically characterized by vasogenic edema in the subcortical white matter. This study involves a 38-year-old female patient who had hypertension, used immunosuppressive drugs and was also found to have nephropathy. After 3 months of treatment for PRES, the patient's symptoms had declined.
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Surgical Management of a Bilateral Bifid Condyle: Diagnosis, Three-dimensional Reconstruction, and Treatment – A Report of a Case and Review of the Literature
p. 251
H Uluturk, E Yücel, B Okur, O Akinci, MS Atac
DOI
:10.4103/njcp.njcp_389_16
PMID
:29465064
Bifid condyle is a rare entity with a difficult diagnosis and usually identified as an incidental finding on routine radiographic examination. The etiology is not well known, possible causes may be developmental, traumatic, vascular, abnormal muscle pulling, nutritional, endocrinal, teratogenic, and infections. The orientation of the condylar heads can behelpful for the etiological diagnosis.This case report describes a 56-year-old woman who suffered from a unilateral, progressively increasing, radiating pain which intensified with the movement of the mandible and includes information about the diagnosis, management, radiographic and three-dimensional model features and review of the literature.
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© Nigerian Journal of Clinical Practice | Published by Wolters Kluwer -
Medknow
Online since 10
th
November, 2010