RESUMO
Diastema between the teeth negatively affects the patients' smile, psychology and daily activities by creating a disharmony in the patients' face. The development of diastema has been attributed to several factors such as labial frenulum, microdontia, mesiodens, peg-shaped lateral incisors, agenesis, cysts, habits such as finger sucking, tongue thrusting, or lip sucking, dental malformations, genetics, proclinations, dental-skeletal discrepancies, and imperfect coalescence of interdental septum. Patients often present with complex problems that require a multidisciplinary treatment approach which includes determination of the aetiological factors, soft tissue morphology, occlusion, patient demands and aesthetic consideration to achieve satisfactory outcomes. Lack of current literature on classification of diastemas and multi-disciplinary approach of management led to the proposal of a new classification the ATAC (Anatomic and Therapeutic Classification) for management of the diastema. This case report highlights the use of the proposed classification for management of diastemas, requiring a perio-restorative intervention using a Chu's proportion gauge to achieve ideal aesthetics.
Assuntos
Diastema , Diastema/terapia , Estética Dentária , Humanos , SorrisoRESUMO
Objectives: The primary objective of this systematic review is to compare the fracture resistance of lithium disilicate (LDS)-based endocrowns and resin-based (RB) endocrowns of in-vitro studies, and the secondary objective is to compare their catastrophic failures. Materials and Methods: The review protocol was registered in the P ROSP ERO database (CRD42020166201). A comprehensive literature search was done in PubMed, Cochrane, EBSCOhost and Google Scholar using key terms. Only in-vitro studies that compared fracture resistance of LDS-based endocrowns and indirect RB endocrowns in molars were included. Data extraction, risk of bias assessment and qualitative analysis of the included studies were performed. Results: Five studies were included in this systematic review. The overall risk of bias for the included studies was moderate. Under axial loading, RB endocrowns showed similar fracture resistance when compared with LDS endocrowns. However, they showed better fracture resistance when compared with zirconia reinforced lithium silicate (ZLS) endocrowns. Furthermore, RB endocrowns showed fewer catastrophic failures than LDS-based endocrowns. Conclusions: RB endocrowns have similar or better fracture resistance and fewer catastrophic failures when compared to LDS-based endocrowns.
RESUMO
OBJECTIVES: To determine salivary melatonin and malondialdehyde levels in individuals with and without dental caries. MATERIALS AND METHODS: Saliva samples were collected in a fasting state from patients with active dental caries (n â= â16) and patients without dental caries (n â= â16). Melatonin was measured in the samples using a commercially available ELISA kit and malondialdehyde was assayed using a standardized spectrophotometric method. RESULTS: The salivary melatonin levels were significantly lower (p â< â0.01) in patients with active dental caries than patients without dental caries, while the salivary malondialdehyde values were significantly higher (p â< â0.01) in patients with active dental caries than patients without dental caries. The binary logistic regression analysis revealed a negative correlation (-0.513) between the salivary melatonin and malondialdehyde levels which was statistically significant (p â< â0.042) in the patient group with active dental caries, while no such relationship could be demonstrated in the patient group without dental caries. CONCLUSION: Melatonin depletion and augmented malondialdehyde levels potentially indicate that the endogenous melatonin has been utilized to counter the oxidative stress-induced during the initiation and progression of dental caries. Further research could explore the potential use of exogenous melatonin supplementation as a preventive and therapeutic measure for dental caries.
