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To determine the preponderance and the distribution of pathological lesions in oral and maxillofacial region reported in and around the Madurai city.

Retrospective study on the oral and maxillofacial biopsies taken during 11 years period from 2007 to 2018 in a CSI Dental College, Madurai, Tamilnadu. A total of 1000 cases were analyzed and 904 were selected. The parameters recorded were age, sex, area, and the histopathological report obtained. Descriptive statistics was used for analysis.

The most common soft tissue lesion was traumatic fibroma (16.1%) and the prevalent hard tissue lesion was periapical cyst (12.7%). The more common oral malignant tumour observed was squamous cell carcinoma (7.3%) and benign tumor was ameloblastoma (5.3%). The frequently affected sites were mandible (36.1%) and buccal mucosa (19.8%). There was more predilection among male than females. The frequency of lesion is common in age group of 31-60 years. A considerable similarity was observed between age, type of lesion and its location.

This study evaluated chronic periapical lesions were the most common hard tissue lesions and fibromas in soft tissue category. The idea of this histopathological study concludes on the requirement for biopsy to rule out type of the lesion and its severity to start up the earlier management.

This study evaluated chronic periapical lesions were the most common hard tissue lesions and fibromas in soft tissue category. The idea of this histopathological study concludes on the requirement for biopsy to rule out type of the lesion and its severity to start up the earlier management.

The third molar is the most frequently impacted tooth with a frequency of occurrence generally reported to be from 18 to 32%. It is considered impacted when its eruption into normal functional occlusion has been interfered with by other teeth, overlying bone or soft tissue and when it is not fully erupted by its expected age of around 20 years. Racial differences affect the pattern of impaction. There is a lacunae of literature on the pattern of mandibular third molar impaction in Tamil population. CP 43 concentration Aim To investigate the prevalence of pattern of third molar impaction among the population in Madurai.

A retrospective cohort study was conducted. The first 1000 OPGs (Orthopantamograms) were taken at the Department of Oral Medicine and Radiology, CSI College of Dental Sciences and Research from August to December 2018 of Madurai population aged between 20 and 40 years old. Data include angle, level and position of impaction, proximity to inferior alveolar nerve and dental caries in second molar and/or third molar.

The average age of subject with mandibular third molar impaction is 30.5 years. The most common occurring mandibular impaction is mesioanglar (60%), Level A (71%), Class II (50%) without involving the inferior alveolar nerve (33%) and dental caries in 20% of second and/ or third molar.

Mandibular third molar impactions are one of the common developmental condition in this modern civilization. Assessing the third molar and prognosis of its eruption is mandatory for better patient management because of numerous complications associated with unerupted third molar.

Mandibular third molar impactions are one of the common developmental condition in this modern civilization. Assessing the third molar and prognosis of its eruption is mandatory for better patient management because of numerous complications associated with unerupted third molar.

Prosthodontics is impossible without denture base resins. Allergic reactions to these resins are not uncommon, albeit favorable properties. Monomeric modifications are being done to improve the properties of the material. Tricyclodecane dimethanol diacrylate (TCDDMDA) monomer has been recently identified and experimented as a comonomer with methyl methacrylate (MMA).

This study aimed to investigate the histocompatibility of TCDDMDA comonomer in polymerized resin at 10% and 20% (vol/vol) concentrations in rats by histomorphometric analysis.

Twenty-four male Wistar rats were randomly divided into the following four groups NP group (control;

= 6), with no palatal appliance, Groups P0, P10, and P20 were fixed with palatal appliances fabricated of 100% MMA, 10% TCDDMDA + 90% MMA, and 20% TCDDMDA + 80% MMA, respectively. Weights of the animals were recorded just before the appliance placement and after 14 days. The animals were sacrificed, and the palatal tissues were processed for histopathological analysis. Histomorphometric parameters assessed were total epithelial (ET), connective tissue (CT), and keratin layer (KT) thicknesses.

No significant difference was observed regarding body weight. Group P0 showed increased ET, CT, and KT when compared to other groups. Bonferroni multiple comparison tests showed a statistically significant difference between all the groups except between P10 and P20 for all the three morphometric parameters.

Palatal appliances with TCDDMDA comonomer showed good histocompatibility in rats up to 20% (vol/vol) concentration.

Palatal appliances with TCDDMDA comonomer showed good histocompatibility in rats up to 20% (vol/vol) concentration.

It has been found that the microorganism behind the failure of root-filled teeth is

, which shows resistance to most of the intra-canal medicaments. Therefore, the purpose of this study was to evaluate the antibacterial efficacy of three intra-canal medications-calcium hydroxide with saline, combinations of calcium hydroxide with 2% chlorhexidine (CHX), and calcium hydroxide with 5% povidone-iodine-against

in dentinal tubules of human incisors.

Forty permanent maxillary central incisors were made into standardized segments and infected with

. They were treated with a paste made of calcium hydroxide and 2% CHX, calcium hydroxide and 5% povidone-iodine, and calcium hydroxide and saline for 1 week. Dentinal shavings collected from the canal were suspended in thioglycollate broth solution and spread on brain heart infusion agar. Colony-forming units (CFUs) were enumerated and the CFU per milligram of dentin was calculated. The pH of the medicaments used was measured with the help of pH meter.

The results showed that the paste made from calcium hydroxide and 2% CHX was significantly more effective than that made from calcium hydroxide and povidone-iodine, and calcium hydroxide and saline.