A 3D-printed vanperio educative dental model - A review report of its chairside evaluation.

Background: Patient education and demonstration of osseous defects by teachers and clinicians are difficult even though there are different models made up of metal, plastic, plaster, stone, and acrylic. To overcome such difficulty, 3D printed Vanperio model was printed for multifunctional activity. Aims and Objective: The aim of this article was to provide information on the 3D printed VANPERIO model and its implications in the field of periodontics and general dentistry. Conclusion: Vanperio model proves to be a promising model for teachers, students, and clinicians in the field of periodontics and general dentistry as it helps in patient education, student learning and also for various demonstrations which is not possible to achieve in other available expensive models.

Effect of ozone irrigation and powered toothbrushing on dental plaque, gingival inflammation, and microbial status in institutionalized mentally challenged individuals: A double-blinded, randomized, controlled clinical trial.

Aim: This study compares and evaluates the efficacy of ozonated water irrigation (OZI) and powered toothbrushing on the oral health and microbial status of mentally challenged individuals. Materials and Methods: Thirty individuals of age range 15-30 years with a mild-to-moderate level of mental retardation (MR) and gingival inflammation participated in this double-blind randomized controlled clinical trial. Total duration of the study was 45 days consisting of two clinical phases (phase I, i.e., aided) and phase II, i.e. unaided) of the duration of 21 days in each phase, with a washout period of 3 days between the two phases. With a split-mouth design, sites from each subject were randomly allocated into two treatment groups: Powered Toothbrushing (PB) and OZI were randomly done for each half side of the mouth of each subject. Subgingival plaque samples were collected from sites of both the treatment groups and sent for microbial analysis. Clinical and microbial parameters were measured before and after the treatment. Results: Significant improvement of the clinical and microbial parameters was found in both treatment groups. However, intergroup differences in the parameters were statistically nonsignificant. Conclusion: OZI could serve as an alternative or adjunct to powered toothbrushes for people with MR.

Serum Vitamin D level and its association with red blood cell indices in patients with periodontitis.

Background: Research of late has brought to light a connect between Vitamin D and anemia. The level of 25hydroxyvitamin D (25(OH) D) is decreased in periodontitis subjects as against subjects without periodontitis and this reduced level could be related to more risk for anemia in periodontitis patients. Objective: This study aimed to evaluate the serum 25(OH) D levels and red blood cell indices in patients affected by generalized Stage III Grade B periodontitis and healthy controls and to assess the association between level of Vitamin D and red cell indices in periodontitis patients. Materials and Methods: The subjects were categorized into (i) case and (ii) control group of 30 each. Clinical parameters including oral hygiene index simplified, mean ratio of sites that bled on probing, gingival index, probing pocket depth, and the clinical attachment loss were assessed in both the groups. Subjects' blood samples (venous) were taken for the biochemical analysis. Results: In contradiction to healthy subjects, periodontitis subjects had significantly diminished 25(OH) D levels, hemoglobin (Hb), hematocrit, and mean corpuscular hemoglobin concentration (MCHC). 25(OH) D was moderately correlated with MCHC (r = 0.53) and it was statistically significant (P = 0.002). Conclusion: Periodontitis impacts Vitamin D status which further causes anemia. It suggests that effective management of periodontitis can help maintain sufficient Vitamin D status and may be vital in preventing anemia.

Correlation of COVID-19 with severity of periodontitis-A clinical and biochemical study.

Background: Various conceptual hypotheses have been put forth to link association of COVID-19 with various chronic diseases such as periodontitis. Empirical evidence is still lacking to correlate the severity of COVID-19 with periodontal diseases. Objectives: This study was undertaken with an objective to correlate COVID severity in systemically healthy patients suffering from periodontal diseases. Materials and Methods: 44 systemically healthy patients of both genders with minimum of 20 teeth in their oral cavity in age range of 20 to 50 years suffering from periodontitis were recruited and categorised into four stages as per American Academy of Periodontology (AAP) 2017 classification for periodontitis. Serum C-reactive protein (CRP) levels and periodontal disease parameters of all the patients were measured. Because of COVID-19 and the nationwide lockdown, the dental practice was highly affected. With the help of self-designed online questionnaire information regarding COVID-19 infection and associated symptoms were recorded. Cases were categorized into five groups based on the World Health Organization clinical progression scale of COVID severity. Results: All the patients suffering from COVID disease in moderate and severe forms had increased probing pocket depth, clinical attachment level, and raised serum C-reactive protein levels as compared to patients who were uninfected or suffering from mild COVID disease and the results were statistically significant. Conclusion: Prioritisation and Implementation of periodontal treatment as a preventive measure for COVID-19 should be done. A positive correlation is observed between the severity of periodontitis and COVID-19.

Indices for measuring periodontitis: a literature review.

Indices are important tools to measure, quantify and treat periodontitis both in epidemiological and clinical situations and are based on the prevailing understanding of the pathogenesis of periodontal disease. However, there is dearth of literature on collective information of periodontal indices formulated to date. This article collectively describes the evolution and the present concept of formulation of periodontal indices based on the multi-factorial nature of periodontal disease and also provides some direction for future periodontal indices. Periodontal indices have evolved from the simple Russell's index to the current usage of measurement of clinical attachment level in the recording of indices. The use of dichotomous measurements and the Genetic Susceptibility Index are the new additions to the periodontal indices. Nevertheless, an ideal would be an index that will keep pace with the ever changing concept of the pathogenesis of periodontal disease.

Evaluation of surgical scalpel versus semiconductor diode laser techniques in the management of gingival melanin hyperpigmentation: A split-mouth randomized clinical comparative study.

BACKGROUND: "Black gums" due to melanin pigmentation of the gingiva is one reason for the demand of cosmetic therapy. Clinicians are often faced with challenge to achieve gingival esthetics in such cases because of its recurrence. Although many procedures were described in literature for gingival depigmentation, only few are mentioning about the intensity of repigmentation. Hence, this study was designed to compare two different techniques for treatment of gingival melanin pigmentation. MATERIALS AND METHODS: Twenty patients who were not esthetically pleased with the color of gingiva were selected. A randomized, split-mouth, depigmentation procedure was performed using surgical scalpel and diode laser techniques. Clinical parameters such as plaque and gingival index, bleeding, pain perception, wound healing, recurrence, and intensity of repigmentation were evaluated. Paired t-test and Chi-square test were used for analysis of data. RESULTS: No bleeding was reported in patients treated with diode laser. Moderate pain was reported by patients treated with surgical scalpel, whereas none was reported in diode laser group. No statistically significant difference was observed for both treatment techniques in terms of wound healing, reappearance of gingival pigmentation, and intensity of the same at the end of 6 and 9 months postsurgically. CONCLUSION: Similar outcomes were observed for both the techniques. Few patients who resulted in no recurrence at 9 months were followed even up to 3 years. Hence, further studies should be done to know the underlying mechanisms. Keeping in mind of armamentarium and cost, surgical scalpel technique remained as the "gold standard" procedure for treatment of gingival melanin pigmentation.

Direct application of autologous periodontal ligament stem cell niche in treatment of periodontal osseous defects: A randomized controlled trial.

BACKGROUND AND OBJECTIVES: The periodontal regenerative techniques using growth factors and stem cells are gaining momentum in periodontics. However, relatively little is known about the biological process and the potential role of direct transplantation of autologous periodontal ligament stem cells (PDLSC) niche in promoting periodontal regeneration. AIM: The aim of this is to clinically and to radiographically evaluate the effects of direct transplantation of autologous PDLSC niche (A-PDLSc Ni) in intrabony defects. MATERIALS AND METHODS: Among 28 patients, 14 sites in test group were treated with open flap debridement (OFD) followed by direct transplantation of A-PDLSc Ni and other 14 sites in control group were treated with OFD. Clinical and radiographic assessment was done for each site before surgical therapy and at intervals of 3, 6, 9, and 12 months using radiovisiography. For clinical and radiographic parameters, intragroup comparison was made by paired t-test and unpaired t-test for intergroup comparisons. RESULTS: The result showed that significant reduction (P < 0.05) of clinical parameters in both the OFD and A-PDLSc Ni groups. Radiographic parameters such as alveolar crest changes, defect area resolution were not statistically significant in both the OFD and A-PDLSc Ni groups whereas improvement in defect density was statistically significant (P < 0.05) only in the autologous periodontal ligament stem cell niche group. CONCLUSION: In the present study, treatment of intrabony defect by direct transplantation of autologous periodontal ligament stem cells niche in comparison with OFD showed a significant reduction in probing pocket depth (PPD), gain in clinical attachment level, and there was no gingival recession seen owing to thick gingiva. Radiographically, there was alveolar crest improvement, decrease in defect area, and increase in defect density in A-PDLSC Ni group.

The relation of gingival thickness to dynamics of gingival margin position pre- and post-surgically.

BACKGROUND: To evaluate the gingival margin position (GMP) before and after open flap debridement in different gingival thickness (GT). MATERIALS AND METHODS: Twenty-seven healthy patients with moderate to advanced adult periodontitis were included in a randomized control clinical trial. A calibrated UNC-15 periodontal probe, an occlusal onlay stent was used for clinical measurements recorded at baseline, 3 month, 6 month, and 16 month. The changes in the GMP were studied at midbuccal (Mi-B), mesiobuccal (MB), and distobuccal sites. GT was measured presurgically, transgingivally at Mi-B and interdental sites, divided into 2 groups: Group 1 (thin) and Group 2 (thick). RESULTS: In GT of ≤1 mm group, the statistically significant apical shift of GMP led to gingival recession at all study sites in the early postsurgical period of 1 and 3 months. During 6 and 16 months, the apical shift of GMP coincided with the Chernihiv Airport at Mi-B site (6 months), MB site (16 months). The gingival recession was obvious at Mi-B sites (16 months). In the GT of >1 mm, the statistically significant apical shift of GMP did not cause gingival recession at any sites throughout postsurgical (1, 3, 6, and 16 months) period. CONCLUSION: Thin gingiva showed apical shift of GMP leading to gingival recession as compared to thick gingiva postsurgically.

A finite element study to determine the occurrence of abfraction and displacement due to various occlusal forces and with different alveolar bone height.

BACKGROUND: Noncarious cervical lesions (NCCLs) are rarely described in the periodontal literature, perhaps because no direct link between NCCLs and periodontal lesions has been demonstrated. AIM: The aim of this study is to determine the stress and displacement produced in the tooth at different bone levels under different occlusal load using finite element model (FEM) study. MATERIALS AND METHODS: Four FEMs of maxillary incisor were designed consisting of the tooth, pulp, periodontal ligament, and alveolar bone at the various level of bone height (25%, 50%, and 75%). Different occlusal load (5 kg, 15 kg, 24 kg, and 29 kg) at an angle of 50° to the long axis of the tooth was applied on the palatal surface at the level of middle third of the crown. All the models were assumed to be isotropic, linear and elastic, and the analysis was performed on a Pentium IV processor computer using the ANSYS software. RESULTS: The maximum stress in the tooth was seen in the cervical region and to a greater extent at the apex for all models. The maximum tooth displacement for all the occlusal loads applied in this study was at the incisal edge with the minimum tooth displacement at the cervical third of the root which shifted apically with the reduction of alveolar bone support. CONCLUSION: The cumulative effect of increased stress and displacement at the cervical region of the tooth would result in abfraction as the age advances along with other wasting diseases.

Comparison of various risk indicators among patients with chronic and aggressive periodontitis in davangere population.

BACKGROUND: The aim of the present study was to compare various risk indicators of chronic periodontitis (CP) and aggressive periodontitis (AP) among patients of Davangere population. MATERIALS AND METHODS: Totally, 89 CP and 90 AP patients were selected from outpatient Department of Periodontics, College of Dental Sciences, Davangere. Various clinical parameters proven to be risk indicators were determined for each patient such as age, gender, occupation, oral hygiene habits, personal habits, income, level of education, place of residence, frequency of dental visits, various oral hygiene indices, gingival status, wasting diseases, malocclusion, laboratory investigations, and the results were subjected to statistical analysis. RESULTS: This study demonstrated that AP is manifested early in life in susceptible individuals. Proven risk indicators for AP and CP in the present study population included young age, place of residence, income and education levels, frequency of dental visits. Patients with AP had better oral hygiene habits and oral hygiene index results than patients with CP. Paan chewing and smoking could be considered as risk factors, both in CP and AP cases. The similar association of plaque scores but higher bleeding tendency in AP patients supported the fact of higher susceptibility of AP patients to periodontal breakdown. Malocclusion being present in the majority of cases could also be put forth as a risk factor for AP and CP. CONCLUSION: This study identifies the different risk indicators for CP and AP and demonstrates the need for constructing nationwide oral health promotion programs to improve the level of oral health awareness and standards in Indian population.

Oral and periodontal features of autosomal recessive syndromes: a tabular review / Características oral e periodontal de síndromes autossômicas recessivas: uma revisão tabular

Objective: To systematically review the data and results of case reports of autosomal recessive syndromes associated with periodontitis. Material and Methods: An internet search using Google and PubMed search engine and keywords- autosomal recessive, periodontitis, syndromes, periodontium and gingiva was carried out. Full-text articles in the English language of all the case reports and reviews that were published in journals from the year 1966 to 2016 were obtained and evaluated and presented in tabular form. Abstracts and articles published in other languages were not included in the review. Results: The data available from the clinical trials were analyzed and presented under broad headings of, systemic features, dental features, periodontal features and laboratory findings presented in tabular form. Conclusion: Many autosomal recessive syndromes with dental component also present with changes or alteration in the periodontium thus stressing the fact that thorough periodontal examination is important during the medical evaluation of patients with syndromes (AU)

Objetivo: Analisar sistematicamente os dados e resultados de relatos de caso de síndromes autossômicas recessivas associadas à periodontite. Material e Métodos: realizou-se uma pesquisa na internet usando os sites Google e PubMed com as palavras-chave: autossômica recessiva, periodontite, síndromes, periodonto e gengiva. Os critérios de inclusão foram restritos aos artigos em texto completo em língua inglesa, relatos de casos e revisões publicados em periódicos de 1966 a 2016. Resumos e artigos publicados em outras línguas não foram incluídos na revisão. Resultados: Os dados extraídos de cada estudo foram agrupados da seguinte forma: as síndromes associadas a características sistêmicas, aos achados dentários e aos achados periodontais, apresentados no formato de tabelas. Conclusões: Diversas síndromes autossômicas recessivas que apresentam alterações dentárias também podem apresentar alterações no periodonto, ressaltando assim, o fato de que o exame periodontal completo é importante durante a avaliação médica de pacientes com síndromes (AU)

Effect of 980-nm diode laser-aided circumferential supracrestal fiberotomy on fluorosed root surfaces.

OBJECTIVE: To evaluate and compare the root surface morphological changes after 980-nm diode laser-aided circumferential supracrestal fiberotomy (CSF) on fluorosed and non-fluorosed teeth. MATERIALS AND METHODS: The sample comprised 27 orthodontic patients (14 males and 13 females; mean age  =  17.3 years) with and without fluorosis, from whom 40 fluorosed and 40 non-fluorosed premolar teeth were extracted for orthodontic reasons. Conventional (control group) and laser-aided (experimental group) CSF was performed on fluorosed and non-fluorosed teeth indicated for orthodontic extraction, using a scalpel and a 980-nm diode laser at 2.5 W power, respectively. Subsequently, teeth were extracted, sectioned, and examined by scanning electron microscope to assess the ultrastructural changes. RESULTS: There were differences in surface morphology among fluorosed and non-fluorosed roots in the control group. The root specimens of both fluorosed and non-fluorosed teeth irradiated by diode laser exhibited no evidence of smear layer, laser-induced pitting or cavitation, linear cuts/markings, carbonization of surface, and heat-induced surface cracking. However, a glazed or slightly melted appearance was observed in root specimens of fluorosed teeth after diode laser irradiation. CONCLUSIONS: These findings suggest that the diode laser-aided CSF procedure is free from thermal hazard on non-fluorosed root surfaces but may provoke some thermal changes on fluorosed root surfaces.