Restorative Dentistry & Endodontics

Case Report

Apexogenesis and revascularization treatment procedures for two traumatized immature permanent maxillary incisors: a case report: Maryam Forghani, Iman Parisay, Amir Maghsoudlou; Restor Dent Endod 2013;38(3):178-181. Published online August 23, 2013; DOI: https://doi.org/10.5395/rde.2013.38.3.178

Abstract PDF PubReader ePub: Traumatic injuries to an immature permanent tooth may result in cessation of dentin deposition and root maturation. Endodontic treatment is often complicated in premature tooth with an uncertain prognosis. This article describes successful treatment of two traumatized maxillary central incisors with complicated crown fracture three months after trauma. The radiographic examination showed immature roots in maxillary central incisors of a 9-year-old boy with a radiolucent lesion adjacent to the right central incisor. Apexogenesis was performed for the left central incisor and revascularization treatment was considered for the right one. In 18-month clinical and radiographic follow-up both teeth were asymptomatic, roots continued to develop, and periapical radiolucency of the right central incisor healed. Considering the root development of these contralateral teeth it can be concluded that revascularization is an appropriate treatment method in immature necrotic teeth.

Research Article

Effect of different air-drying time on the microleakage of single-step self-etch adhesives: Horieh Moosavi, Maryam Forghani, Esmatsadat Managhebi; Restor Dent Endod 2013;38(2):73-78. Published online May 28, 2013; DOI: https://doi.org/10.5395/rde.2013.38.2.73

Abstract PDF PubReader ePub: Objectives
This study evaluated the effect of three different air-drying times on microleakage of three self-etch adhesive systems.
Materials and Methods
Class I cavities were prepared for 108 extracted sound human premolars. The teeth were divided into three main groups based on three different adhesives: Opti Bond All in One (OBAO), Clearfil S³ Bond (CSB), Bond Force (BF). Each main group divided into three subgroups regarding the air-drying time: without application of air stream, following the manufacturer's instruction, for 10 sec more than manufacturer's instruction. After completion of restorations, specimens were thermocycled and then connected to a fluid filtration system to evaluate microleakage. The data were statistically analyzed using two-way ANOVA and Tukey-test (α = 0.05).
Results
The microleakage of all adhesives decreased when the air-drying time increased from 0 sec to manufacturer's instruction (p < 0.001). The microleakage of BF reached its lowest values after increasing the drying time to 10 sec more than the manufacturer's instruction (p < 0.001). Microleakage of OBAO and CSB was significantly lower compared to BF in all three drying time (p < 0.001).
Conclusions
Increasing in air-drying time of adhesive layer in one-step self-etch adhesives caused reduction of microleakage, but the amount of this reduction may be dependent on the adhesive components of self-etch adhesives.

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