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Introduction: Furcation regions present some of the most significant challenges to the successful outcome of periodontal therapy. Due to their anatomical complexities, the areas become inaccessible, and instrumentation is generally tricky and often incomplete. Hence, it is essential to have a thorough knowledge of molar anatomy to assess the case difficulty, appropriate diagnosis, and treatment planning. Aim: To radiographically evaluate and classify the furcation anatomy of mandibular first and second molars based on root trunk length and root divergence angle. Materials and Methods: This retrospective observational study was carried out in AB Shetty Memorial Institute of Dental sciences, Mangalore between February and March 2020. Orthopantomograms (OPG) with permanent healthy first (25 right and 25 left) and second mandibular molars (25 right and 25 left) with no alveolar bone loss obtained from systemically healthy individuals were selected for the study. They were screened for root divergence angle and root length to root trunk length ratio. According to the root divergence angle, the total sample was classified as Group I (with angle <30°), Group II (with angle 30°to 60°), Group III (with angle >60°). They were classified into Type A, B, and C based on Hou and Tsai classification. Type A root trunks involving the cervical third or less, Type B involves upto cervical half of the length of the root and Type C involves cervical two-thirds of the root, respectively. The data were collected and entered in the Microsoft Excel sheet. Mean and standard deviation was calculated for root divergence. Statistical analysis was performed using Statistical Package for Social Sciences (SPSS) version 23.0. Student t-test was used to compare intragroup variations in root divergence in the left and right molars. The p<0.05 was considered to be significant. Results: Total 100 teeth (50 mandibular first molar (25 left and 25 right) and 50 mandibular second molars (25 left and 25 right)) were included in the study and analysed. In terms of Furcation Angle (FA), mandibular left first molar showed an increased frequency of Group II (48%) and Group III (48%), while mandibular left second molar showed an increased frequency of Group II (68%). Among mandibular right first molar Group III (56%) showed an increased frequency, while Group II (92%) was commonly seen in right second molar. Intergroup comparison revealed a statistically significant difference in divergence between mandibular left first and second molars (36 and 37) p<0.01, mandibular right first and second molars (46 and 47) (p<0.01). Divergence of furcation was more significant in 36 and 46 than 37 and 47, respectively. The current study results showed a higher frequency of Type A in all the four involved teeth, i.e., left first (96%) and second (68%) molars, right first (92%) and second (88%) molars. Conclusion: The study results showed an increased frequency of Group II FA and Type A root trunks. The divergence of furcation was greater in first molars compared to the second molars. [ABSTRACT FROM AUTHOR]

Context: Periodontitis and chronic obstructive pulmonary disease (COPD) are chronic progressive inflammatory conditions. Smoking has been associated with both chronic periodontitis and COPD. Hence, the present study was designed to correlate serum levels of cotinine with the severity of periodontal disease with or without COPD. Settings and Design: A total of eighty patients, twenty healthy individuals, twenty patients with chronic generalized periodontitis without smoking and without COPD, twenty patients who are smokers with chronic periodontitis without COPD and twenty patients who are smokers with chronic periodontitis and COPD in the age range of 43–65 years were selected for the study. Subjects and Methods: Serum cotinine level assessment, smoking history, and periodontal examination were done in all the patients and the data obtained were statistically analyzed. Results: The mean serum cotinine level was highest in smokers with chronic periodontitis and COPD (93.642 ± 14.727) and it differed significantly between the four groups (P < 0.001). There is a significant positive correlation between the number of cigarettes and serum cotinine levels in both groups involving smoking. There was no significant correlation between serum cotinine level and clinical attachment loss in chronic periodontitis smokers with or without COPD. Conclusions: The result of this study indicates that increased smoking with COPD causes a higher chance of progression of periodontal destruction but it is not statistically significant. Furthermore, this study indicates that the assessment of serum cotinine levels is a reliable method to evaluate smoking exposure. [ABSTRACT FROM AUTHOR]

Background: Collagen fibers are the main element of gingival connective tissue and contribute a leading role in the preservation of structural integrity and tissue function. Hence, its degradation is regarded as the main marker of periodontal disease progression. Aim: The aim of this study is to analyze and compare collagen fibers, their birefringence pattern in healthy and in diseased gingival tissues stained using picrosirius red stain (PRS) and the polarizing microscope. Materials and Methods: A total of 90 participants screened were divided into the control group (healthy gingiva) and experimental group (moderate periodontitis and severe periodontitis) based on the clinical parameters. Gingival tissue sections were stained with PRS and observed under the polarized microscope to assess the type of collagen fibers in healthy and diseased gingival tissue. Statistical analysis was performed using the one-way ANOVA and Tukey multiple comparison test. Results: The healthy group revealed well-packed collagen in a parallel pattern with a strong birefringence, whereas in severe periodontitis group showed loosely packed collagen fibers in a haphazard pattern suggestive of severe destruction of the extracellular matrix. The moderate periodontitis group had a blended mixture of thick and thin fibers. Conclusions: Collagen fibers showed birefringence property when stained with PRS that helps in a better understanding of normal and pathological conditions. [ABSTRACT FROM AUTHOR]

Introduction: The purpose of this research was to evaluate the serum level of vitamin C in patients with type 2 diabetes mellitus with and without periodontitis, and also to interpret whether raised or lessened serum vitamin C levels might be associated to a possibility for building oxidative stress in type 2 diabetes mellitus with periodontitis. Material and Methods: Investigation was conducted on diabetic subjects with and without periodontitis. The serum vitamin C level was determined using the 2, 4-dinitrophenylhydrazine method, and the spectrometer was used to read the concentration of serum vitamin C. The data attained were statistically calculated using the ANOVA test and post-hoc test. Results: The findings revealed that average serum vitamin C levels were reduced considerably among test groups (groups B, C, D) (p< 0.0001) in contrary to the healthy control group. Conclusion: The existing results are proof that reduced concentration of antioxidants such as vitamin C is related to a greater threat to the increase of oxidative stress in patients with type 2 diabetes mellitus and periodontitis. [ABSTRACT FROM AUTHOR]

Background and Aims: Pre and post-operative nutritional status are not often tested on a consistent basis when patients are analyzed and diagnosed with Type 2 Diabetes Mellitus (T2DM) or have chronic periodontitis. Thus, this study pursues to evaluate the predictive value of serum vitamin C and lead levels in this population at baseline and after periodontal treatment. Materials and Methods: In an interventional study setting we enrolled 120 subjects which were later categorized into four sub-groups: set 1 - individuals with chronic periodontitis, set 2 - individuals with T2DM, set 3 - individuals with T2DM and chronic periodontitis respectively set 4 - healthy individuals as control group. Scaling and root planing was performed only to individuals with periodontitis and T2DM. At baseline and 21 days after periodontitis treatment blood was obtained from the subjects and analysis of serum vitamin C and serum lead was done and data obtained was statisticaly analysed. Results: ANOVA test showed baseline values of both the parameters to be statistically significant different between groups and within groups (p<0.001). Alteration was seen in the parameters postoperatively regarding serum vitamin C was increased and lead level decreased; paired t-test showed statistically significant difference (p<0.001). Conclusion: Serum Vitamin C can be considered a key biomarker. Increased lead level can be a risk factor for commencement and progression of T2DM and chronic periodontitis. [ABSTRACT FROM AUTHOR]

Background: Periodontal diseases are a group of inflammatory conditions resulting from interaction between a pathogenic bacterial biofilm and susceptible host's inflammatory response eventually leading to the destruction of periodontal structures and subsequent tooth loss. Hence, investigation of salivary proteins in individuals with periodontal diseases may be useful to enhance the knowledge of their roles in these diseases. Materials and Methods: This case-control study was conducted at A.B. Shetty Memorial Institute of Dental Sciences, Mangalore. The study comprised of 90 patients of age between 25-60 years who were clinically examined and divided into three groups of 30 each: namely clinically healthy, gingivitis and chronic periodontitis. These were classified according to the values of gingival index score, clinical attachment loss and probing pocket depth. Unstimulated saliva was collected and salivary mucin, amylase and total protein levels were determined. Statistical analysis: Results obtained were tabulated and statistically analyzed using ANOVA test and Karl pearson's correlation test. Results: The results of the study showed an increased concentration of salivary mucin, amylase and total protein in gingivitis patients and increased levels of amylase and total protein in saliva of chronic periodontitis patients compared to healthy individuals which were statistically significant. Adecrease in mucin concentration was observed in the periodontitis group compared to gingivitis group. A positive correlation was present between salivary mucin, amylase and total protein levels in the three groups. Conclusion: Salivary mucin, amylase and total protein may serve as an important biochemical parameter of inflammation of the periodontium. Also, it can be hypothesized that various enzyme inhibitors might be useful as a part of host modulation therapy in the treatment of periodontal diseases. [ABSTRACT FROM AUTHOR]