Angadi P.V.,Klevk Institute Of Dental Science |
Hemani S.,Index Institute of Dental science |
Prabhu S.,Yenepoya Dental College
Journal of Forensic and Legal Medicine | Year: 2013
Correct sex assessment of skeletonized human remains allows investigators to undertake a more focused search of missing persons' files to establish identity. Univariate and multivariate odontometric sex assessment has been explored in recent years on small sample sizes and have not used a test sample. Consequently, inconsistent results have been produced in terms of accuracy of sex allocation. This paper has derived data from a large sample of males and females, and applied logistic regression formulae on a test sample. Using a digital caliper, buccolingual and mesiodistal dimensions of all permanent teeth (except third molars) were measured on 600 dental casts (306 females, 294 males) of young adults (18 -32 years), and the data subjected to univariate (independent samples' t -test) and multivariate statistics (stepwise logistic regression analysis, or LRA). The analyses revealed that canines were the most sexually dimorphic teeth followed by molars. All tooth variables were larger in males, with 51/56 (91.1%) being statistically larger (p < 0.05). When the stepwise LRA formulae were applied to a test sample of 69 subjects (40 females, 29 males) of the same age range, allocation accuracy of 68.1% for the maxillary teeth, 73.9% for the mandibular teeth, and 71% for teeth of both jaws combined, were obtained. The high univariate sexual dimorphism observed herein contrasts with some reports of low, and sometimes reverse, sexual dimorphism (the phenomenon of female tooth dimensions being larger than males'); the LRA results, too, are in contradiction to a previous report of virtually 100% sex allocation for a small heterogeneous sample. These reflect the importance of using a large sample to quantify sexual dimorphism in tooth dimensions and the application of the derived formulae on a test dataset to ascertain accuracy which, at best, is moderate in nature. © 2013 Elsevier Ltd and Faculty of Forensic and Legal Medicine. All rights reserved.
PubMed | Rama University, Bhagwan Mahavir Medical Superspeciality Hospital, PDU Dental College, Index Institute of Dental science and Sharda University
Type: Journal Article | Journal: The journal of contemporary dental practice | Year: 2016
Various agents are used these days for increasing the esthetics. One such procedure is bleaching that offers various advantages, as it is minimal invasive and cheap option to color the teeth and remove stain. The altered enamel after the bleaching process shows surface demineralization and porosities. The present study aimed to evaluate the effect of different bleaching agents on the microhardness of enamel.A total of 100 freshly human extracted maxillary premolar teeth were selected for the study. Teeth with sound tooth structure were included for the study. All the specimens were randomly divided into four groups with 25 specimens in each group depending upon the type of bleaching agent used: Group A, artificial saliva (Control group); Group B, 35% hydrogen peroxide (HP); Group C, 25% HP; Group D, 10% carbamide peroxide (CP). Knoop Hardness Number (KHN) was calculated at 24, 48-hour, and 7-week interval.Results showed no statistical significant differences between the microhardness of enamel of different groups (p < 0.005). A slight fall in the value of KHN was seen in all the groups, except for the control group, although the results were statistically nonsignificant (p > 0.005).Although nonsignificantly, all the bleaching solutions produced some amount of alterations in the microstructure of enamel. More studies with higher study groups and more advanced estimation technologies are required to minimize microstructure alterations and promote for better outcome of bleaching procedures.
PubMed | Index Institute of Dental science and Dental Krafts Clinic
Type: Journal Article | Journal: Oral and maxillofacial surgery | Year: 2016
Long standing oral submucous fibrosis (OSMF) is associated with involvement of the oral submucosa and the muscles of mastication leading to difficulty in mouth opening. Various surgical modalities are mentioned for release but each has its own limitations. The aim of the study was to evaluate the postoperative mouth opening in patients of OSMF after excision of fibrous bands followed by coronoidotomy and surgical defect coverage by extended nasolabial flap.We evaluated the use of extended nasolabial flaps and coronoidectomy in the management of 11 randomly selected patients with histologically confirmed oral submucous fibrosis. They all had interincisal opening of less than 25mm and were treated by bilateral release of fibrous bands, coronoidectomy or coronoidotomy, and extended grafting with a nasolabial flap.Their interincisal opening improved significantly from a mean of 8.687mm to a mean of 36.754.05mm at 6-month follow-up.The procedure was effective in the management of patients with oral submucous fibrosis, the main disadvantage being the extraoral scars.
PubMed | P.A. College and Index Institute of Dental Science
Type: Comparative Study | Journal: Dental press journal of orthodontics | Year: 2015
The aim of this cross sectional study was to assess serum insulin-like growth factor-1 (IGF-1) levels in female and male subjects at various cervical vertebral maturation (CVM) stages.The study sample consisted of 60 subjects, 30 females and 30 males, in the age range of 8-23 years. For all subjects, serum IGF-1 level was estimated from blood samples by means of chemiluminescence immunoassay (CLIA). CVM was assessed on lateral cephalograms using the method described by Baccetti. Serum IGF-1 level and cervical staging data of 30 female subjects were included and taken from records of a previous study. Data were analyzed by Kruska-Wallis and Mann Whitney test. Bonferroni correction was carried out and alpha value was set at 0.003.Peak value of serum IGF-1 was observed in cervical stages CS3 in females and CS4 in males. Differences between males and females were observed in mean values of IGF-1 at stages CS3, 4 and 5. The highest mean IGF-1 levels in males was observed in CS4 followed by CS5 and third highest in CS3; whereas in females the highest mean IGF-1 levelswas observed in CS3 followed by CS4 and third highest in CS5. Trends of IGF-1 in relation to the cervical stages also differed between males and females. The greatest mean serum IGF-1 value for both sexes was comparable, for females (397 ng/ml) values were slightly higher than in males (394.8 ng/ml).Males and females showed differences in IGF-1 trends and levels at different cervical stages.
PubMed | Dental Krafts Dental Clinic and Index Institute of Dental science
Type: Journal Article | Journal: Oral and maxillofacial surgery | Year: 2016
Internal derangement of the temporomandibular joint (TMJ) is one of the most common forms of temporomandibular disorders. The minimally invasive treatments such as arthrocentesis as well as arthroscopic lysis and lavage are often used as a first-line surgical treatment or in conjunction with nonsurgical modalities with low morbidity and high efficacy. Sodium hyaluronate (SH) has been proposed as an alternative therapeutic agent with similar therapeutic effects.A prospective study was carried out for evaluation of efficacy of TMJ arthrocentesis with and without injection of SH in management of internal derangements.A total of 30 patients suffering from internal derangement of TMJ were selected for this study. Patients were randomly divided into the following two groups: group 1-arthrocentesis-only group and group 2-arthrocentesis + SH group. Each group constituted 15 patients.Six-month postoperative mean mouth opening (MMO) increase was 13.611.64 and 15.533.01mm in group 1 and group 2, respectively. At 6months, there was marked improvement in masticatory efficiency with mean increase of 5.070.13 in group 1 and 6.400.04 in group 2. Mean pain reduction was 5.270.67 and 6.480.44 in group 1 and group 2, respectively.Although our series comprised a limited number of cases and a short follow-up period, initial results suggested that arthrocentesis with SH injection seemed to be superior to art.
PubMed | Srm Dental College And Hospital, Index Institute of Dental science, Bharath University and Index Medical College Hospital and Research Center
Type: Journal Article | Journal: Contemporary clinical dentistry | Year: 2015
Exfoliated oral cancer cells in saliva samples from patients with oral squamous cell carcinoma (OSCC) can be used to determine the incidence and type of mutations of the p53 tumor suppressor gene. The purpose of this study was to identify C-deletion mutation in exon 4 codon 63 of p53 gene in the saliva of OSCC patients by polymerase chain reaction (PCR).Saliva samples of 20 newly histopathologically diagnosed OSCC patients and 5 healthy volunteers were subjected to isolation of the total genomic DNA and PCR amplification for C-deletion on exon 4 of p53 gene. The resulting products were resolved by agarose gel electrophoresis, viewed and photographed on ultraviolet-transilluminator.The relationship between the frequencies of genetic alterations was assessed by Chi-square test. Differences with values of P < 0.05 were statistically significant.The study concluded a 100% presence of C-deletion mutation in exon 4 codon 63 of p53 in the saliva of OSCC patients. This study suggests that detection of mutation in exon 4 codon 63 of p53 by PCR is a fast, reliable, accurate, and sensitive molecular method for OSCC diagnosis.
PubMed | Index Institute of Dental science and GMC Hospital
Type: Case Reports | Journal: The journal of contemporary dental practice | Year: 2015
Fibrous dysplasia is a benign fibro-osseous disorder of unknown etiology that may affect the craniofacial region causing significant impairment of facial esthetics and function. This paper reports a case of a 21-year-old male, which was investigated and diagnosed with craniofacial fibrous dysplasia involving an overgrowth over right maxillary and mandibular region associated with facial asymmetry, severe occlusal cant and anterior open bite. Management of the case included surgical excision, cosmetic contouring and orthodontic intervention. The case was reviewed over a period of two years, which demonstrate stable treatment outcome.
Surapaneni S.S.,Rural Dental College |
Chandki R.,Index Institute of Dental science
Journal of Natural Science, Biology and Medicine | Year: 2015
The myriads of technological advancements in dentistry in last two decades have led to a dramatic shift from conventional invasive procedures to more conservative biomimetic therapies. In this series, management of traumatic dental injuries has taken a big leap in that now it is possible to conserve many of these teeth which were otherwise doomed to extraction. Depending on the extent of injury, esthetic and functional requirements, traumatic dental injuries can be managed by a variety of clinical procedures including composite resin restorations, reattachment of fractured fragment, endodontic therapy with or without post and core or lastly extraction. Reattaching natural tooth structure offers an advantage over the others in that it is instant, provides superior esthetics, preserves the natural tooth structure and is best accepted by the patient. This paper describes the comprehensive management of traumatized maxillary central incisor involving pulp exposure while maintaining pulp vitality and natural appearance of a tooth.
Mahajan R.K.,Amandeep Hospital |
Chhajlani R.,Index Institute of Dental science |
Ghildiyal H.C.,Amandeep Hospital
Indian Journal of Plastic Surgery | Year: 2014
Introduction: Despite the improved techniques of repair of cleft palate, fistula occurrence is still a possibility either due to an error in the surgical technique or due to the poor tissue quality of the patient. Though commonly the fistula closure is established by use of local flaps but at times the site and the size of the fistula make use of local flaps for its repair a remote possibility. The use of tongue flaps because of the central position in the floor of the mouth, mobility and the diversity of positioning the flaps make it a method of choice for closure of anterior palatal fistulae than any other tissues. The aim of this study was to analyse the utility of tongue flap in anterior palatal fistula repair. Materials and Methods: We had 41 patients admitted to our hospital during the period 2006-2012 for repair of palatal fistula and were enrolled into the study. In the entire 41 cases, fistula was placed anteriorly. The size of the fistulae varied from 2 cm × 1.5 cm to 5.5 cm × 3 cm. The flaps were divided after 3-week and final inset of the flap was done. Observation and Result: None of the patients developed flap necrosis, in one case there was the dehiscence of the flap, which was reinset and in one patient there was bleeding. None of our patients developed functional deformity of the tongue. Speech was improved in 75% cases. Conclusion: Leaving apart its only drawback of two-staged procedure and transient patient discomfort, tongue flap remains the flap of choice for managing very difficult and challenging anterior palatal fistulae.
PubMed | Bharati Vidyapeeth Deemed University, Index Institute of Dental science and Modern Dental College and Research Center
Type: Journal Article | Journal: Indian journal of dental research : official publication of Indian Society for Dental Research | Year: 2016
Extrinsic staining of acrylic resin dentures could be a major esthetic problem for denture wearers. Tea, coffee, cola, turmeric, and tobacco often cause extrinsic staining of dentures.To evaluate the efficacy of various denture cleansing materials in the removal of tea and turmeric stains and to compare the efficacy of those denture cleansers with each other in the removal of tea and turmeric stains.Heat-cured acrylic resin specimens were stained using tea and turmeric solutions. The spectrophotometer was used to determine the reflectance values of the samples and to evaluate the efficacy of various denture cleansing materials in removal of tea and turmeric stains. Three denture cleansers, namely, sodium hypochlorite, Safe plus, and Clinsodent were used in the study. Water was used as a control.ANOVA test and post hoc Tukeys test were used to determine the statistical difference between the groups.A statistically significant difference was found (p 0.05) between the different denture cleansing materials used. Products containing sodium perborate along with trisodium phosphate had the highest stain removing capability.It was found that all the denture cleansing materials used in the study were effective in removing tea and turmeric stains. Products containing sodium perborate along with trisodium phosphate had a comparatively greater stain removal capability than products containing sodium perborate along with sodium bicarbonate followed by products containing sodium hypochlorite followed by water (control).