Effect of maxillary anterior supernumerary tooth extraction on the underlying malocclusion.

INTRODUCTION: Orthodontic discrepancies are a common finding in patients with supernumerary teeth (ST). The presence of a ST can cause a number of orthodontic discrepancies, including delayed eruption or retention of adjacent teeth, crowding, spacing, and abnormal root formation. The aim of the present study was to assess the effect of extraction of an anterior supernumerary tooth on the underlying orthodontic discrepancies without additional treatment for a 6-month period. METHODS: This was a prospective, longitudinal, observational, study. It included 40 participants with orthodontic malocclusions due to maxillary anterior supernumeraries. We examined the changes in the crowding and excessive space in the anterior and posterior segments on cast models. RESULTS: In the group that presented with crowding, a statistically significant decrease of 0.95 ± 0.17 mm (P < 0.001) was found between T0 and T1. Of the participants, three exhibited full self-correction. The excessive space at T0 (3.06 mm) decreased by 1.78 ± 0.19 mm to T1 (1.28 mm) in the anterior segment. Seven participants showed full self-correction of the diastemas after the 6-month observation period. CONCLUSION: The results imply that orthodontic treatment can be postponed for at least 6 months after the extraction of the supernumerary tooth as potential self-correction can be expected. This natural alleviation of the malocclusions may make the orthodontic treatment simpler, shorten the treatment time and decrease overall appliance wear time.

Efficacy of vibrotactile device DentalVibe in reducing injection pain and anxiety during local anaesthesia in paediatric dental patients: a study protocol for a randomised controlled clinical trial.

INTRODUCTION: A current non-pharmacological mean for attaining painless local anaesthesia (LA) is presented by vibrotactile devices. Their concept is to reduce injection pain due to distraction by applying physical stimuli which interfere with pain signals. The aim of this study is to determine the efficacy of the DentalVibe (DV) device in reducing pain and anxiety associated with LA in paediatric patients. METHODS AND ANALYSIS: The proposed study is a randomised controlled clinical trial with split-mouth design. Included are positive patients aged 8-12 years, requiring buccal infiltration for extraction of two bilateral primary maxillary molars. After dental fear measurement, eligible patients undergo two single-visit treatments with DV device allocated to either first or second LA via computer-generated randomisation sequence. Outcome measures will be self-reported pain felt during LA on Visual Analogue Scale; self-reported anxiety on Facial Image Scale; pain-related behaviour according to Faces, Legs, Activity, Cry, Consolability Scale; heart rate; patient preference to LA technique.Data will be analysed with intention-to-treat concept by Student's t-test for paired samples, Wilcoxon signed-rank test, p<0.05. Pretest on 20 subjects resulted in n=41 patients sample size. ETHICS AND DISSEMINATION: This study protocol has been approved by the Committee for Scientific Research Ethics, Medical University - Plovdiv, Bulgaria (Reference number P-8604, Protocol of approval No. 6/23.11.2017) and registered on a publicly accessible database. This research received institutional funding from the Medical University - Plovdiv, Bulgaria, under project SPD-03/2017. Findings will be reported in scientific publications and at research conferences, and in project summary papers for participants. TRIAL REGISTRATION NUMBER: NCT03445182; Pre-results.

Application of Platelet-Rich Fibrin and Injectable Platelet-Rich Fibrin in Combination of Bone Substitute Material for Alveolar Ridge Augmentation - a Case Report.

BACKGROUND: Different barrier membranes and augmentation techniques are used in oral surgery to recover lost bone structures with varied success. Recently, a combination between bone graft materials and Platelet-Rich-Fibrin (PRF) is implemented in the periodontology and implantology. AIM: The aim of this case report was to assess the possibility for augmentation of the alveolar ridge in the frontal region of the upper jaw, utilizing a combination of bone graft material, injectable platelet-rich-fibrin (i-PRF) and advanced platelet-rich fibrin (A-PRF). MATERIALS AND METHODS: An 18 year-old male with expulsion of tooth 11 and partial fracture of the alveolar ridge was treated with augmentation of the alveolar ridge using bone graft material, injectable platelet-rich-fibrin(i-PRF) and advanced platelet-rich-fibrin (A-PRF). Clinical results were reviewed 4 months after the augmentation and a dental implant was placed. RESULTS: The postoperative period was uneventful. The control CBCT scan showed good organization of new bone allowing placement of a dental implant. CONCLUSION: The successful clinical and radiographic results of the case suggest that using A-PRF and i-PRF can be beneficial for bone augmentation of the alveolar ridge before implant placement.