Application of highly ozonated sunflower oil does not improve palatal wound healing: A randomized controlled clinical trial.

BACKGROUND: Ozone is a molecule that plays an important role in dentistry, specially for wound healing. The aim of the present study was to clinically and immunologically evaluate the effect of ozonated oil on the healing of palatal wounds. METHODS: This is a prospective, longitudinal, triple-blind, randomized, placebo-controlled clinical trial. The groups were divided as follows: Test group (n = 14): after removal of the free gingival graft (FGG), the palatal wound was treated with ozonized seed sunflower oil with a peroxide index between 510 and 625 meq O2 /kg; Control group (n = 14): after removal of the FGG, the palatal wound was treated with non-ozonated sunflower oil (placebo). The treatments were applied three times a day, for 7 days. RESULTS: There were no significant differences in the measurements of wound area (mm2 ) between the test and control groups in the different periods evaluated (0, 3, 7, and 14 days; p > 0.05). The intra-group analysis showed a significant decrease in wound size over the course of days (0, 3, 7, and 14 days; p < 0.05). Vascular endothelial growth factor (VEGF; pg/mL) presented a significant reduction at 7 days (p < 0.05) compared to day 3 in the test group (p < 0.05). There was a statistical difference for malondialdehyde (MDA; pg/mL) in the test group between 3 and 7 days post-treatment (p < 0.05) and between test and control groups on the 7th day (p < 0.05). CONCLUSIONS: The application of highly ozonated sunflower oil did not improve the remaining scar area of the palate, decreasing the VEGF and increasing the oxidative stress marker MDA.

Prevalence of Periodontal Disease and Alveolar Bone Loss in Overweight/Obese Brazilian Adolescents.

Purpose: To evaluate the prevalence of periodontal disease and alveolar bone loss in overweight/obese Brazilian adolescents.
Methods: Participants included 12- to 18-year-old adolescents who were allocated into two groups: (1) normal weight; or (2) overweight/obese. Body mass index (BMI) and waist circumference (WC) were evaluated to classify overweight/obesity. Clinical measurements included the visible plaque index (VPI) and community periodontal index (CPI). Alveolar bone loss (ABL) was also evaluated by bitewing radiographs.
Results: There were 109 subjects. There were no significant differences between the groups for VPI and CPI code two (P >0.05). CPI code zero was more prevalent in normal weight subjects than in overweight/obese subjects (P <0.05). CPI codes one and three were significantly more frequent in the overweight/obese group (P <0.05). The normal weight subjects revealed a higher percentage of sites with no ABL (P <0.05), while the overweight/obese group had a higher prevalence of incipient ABL with the number of sites greater than one and less than three (P <0.05).
Conclusion: Overweight/obesity may affect the progression of early periodontitis in the presence of poor biofilm control in adolescents, as this group presents more bleeding on probing and pathological periodontal pockets greater than four mm as well as a higher prevalence of sites with incipient alveolar bone loss.

Temporary restorative materials used by Brazilian Dental Schools during and after endodontic treatment / Materiais restauradores temporários usados pelas faculdades de Odontologia brasileiras durante e após tratamento endodôntico

Objective: this study aimed at evaluating which temporary restorative materials are recommended by Brazilian Dental Schools (BDS), during and after endodontic treatment completion. Methods: a questionnaire was distributed to all 191 BDS, and returned by 55 (28.8%)schools. Topics of interest included: which temporary restorative materials are advised in different remaining dental conditions and different permanence periods in the mouth, minimum material thickness, intermediate material application, use of matrix band and factors influencing material selection. Results: the answers showed that the remaining coronal tooth structure significantly interferes with the choice of temporary restorative materials. On the other hand, time between ap pointments does not have significant influence on material selection. Still, premixed hygroscopic materials are recommended in cases of simple endodontic access (occlusal or lingual/palatal) if the material will be kept for up to one week in the month. Glass ionomer cement (GIC) is the most commonly used material in long periods, especially for access cavities involving proximal surfaces or fractured cusps. The utilization of an intermediate material is very variable and some schools do not advocate any material. Most BDS recommend a minimum thickness of 3 mm for temporary restorations and the use of matrix band in proximal surfaces. Conclusion: BDS choices with respect to coronal sealing materials are driven especially by remaining dental conditions.