In this study we describe the morphology of the larval shell of three oyster species of Crassostrea genus. Two species, C. rhizophorae and C. brasiliana, are native to the Brazilian coast, and C. gigas is an introduced species. Samples of laboratory reared larvae, obtained through artificial fertilisation, were collected at intervals during the cultivation process for analysis using Scanning El...

BACKGROUND To develop a synthesis within a Bayesian probability framework of previously established evidence, in order to derive an overall conclusion about the hypothesis (H1): 'High-viscosity glass-ionomer cements (HVGIC) are inferior to silver amalgam as (load bearing) restorative materials for permanent posterior teeth'. METHODS Following Bayesian method, the prior Odds that H1 is true (e...

In this report we describe a combined orthodontic and surgical treatment for a 14-year-old boy with severe skeletal class III deformity and dental problem. His upper posterior primary teeth in the left side were over-retained and 6 maxillary teeth (bilateral central incisors and canines, left first and second premolars) were impacted, together with 5 supernumerary teeth in both arches. The trea...

OBJECTIVE To analyze the pattern of disocclusion during excursive mandibular movements and presence or absence of occlusal interferences and occlusal pathologies (gingival recession and abfraction). METHOD Examination of 120 individuals divided into two groups, as follows: Group 1 - 90 patients with complete cleft lip and palate (study group), subdivided into 30 patients with complete left un...

Background & Aims: Crown restoration of teeth after root canal treatment protects their remaining structure against breakage and infection of the root canal, and will replace the missing structure. This study was performed to identify the prevalence of different types of crown restorations after root canal treatment of posterior teeth in Kerman, Iran, in 2013. <stro...

BACKGROUND Pulp stone, though of an unclear aetiology, is clinically common. It potentially poses procedural difficulty to the endodontist and may also be a marker of an underlying systemic condition. OBJECTIVES The study investigated pulp stone occurrence in adult restorative patients. It also highlighted the relationship between pulp stone and pristine posterior teeth, chronic periodontitis...

OBJECTIVE The aim of this study was to introduce a new method for bilateral distal movement of the entire maxillary posterior segment. CASE REPORT A 17-year-old girl with Class I skeletal malocclusion (end-to-end molar relationships, deviated midline and space deficiency for left maxillary canine) was referred for orthodontic treatment. She did not accept maxillary first premolars extraction....

Objective: The aim of the study was to investigate fracture strength different composite resins and quantity voids in conventional posterior composite, high-flow flowable bulk-fill fiber-reinforced composite. Materials Methods: Forty-four caries-free, freshly extracted mandibular premolars were used for this study. Teeth prepared cavity root canal treatment. Subsequently, treatment applied teet...

Q1. In the lingual system, the force to the center of resistance of a tooth is different from that in the labial system. In the present case, the upper incisors tipped lingually after intrusion, as shown in the cepha­ lometric superimpositions. I think that the intrusive force against the upper posterior teeth was applied lingually to the center of resistance, and, therefore, the upper posterio...