نتایج جستجو برای: cusp deflection
تعداد نتایج: 15141 فیلتر نتایج به سال:
aim: the aim of this study was to compare cusp deflection, infraction and fracture in teeth filled with three temporary filling materials. materials & method: forty five extracted human premolar teeth were chosen. after root canal therapy and mesio-occluso-distal cavity preparation, samples were randomly divided into three groups , each contained 15 teeth and filled with three temporary filling...
Aim: the aim of this study was to compare cusp deflection, infraction and fracture in teeth filled with three temporary filling materials. Materials & method: Forty five extracted human premolar teeth were chosen. After root canal therapy and mesio-occluso-distal cavity preparation, samples were randomly divided into three groups , each contained 15 teeth and filled with three temporary filling...
OBJECTIVES This study investigated the prevalence and electrocardiographic and electrophysiologic characteristics of aortic root ventricular arrhythmias (VAs). BACKGROUND Idiopathic VAs originating from the ostium of the left ventricle may be ablated at the base of the aortic cusps. METHODS We studied 265 patients with idiopathic VAs with an inferior QRS-axis morphology. RESULTS The succe...
BACKGROUND Ventricular arrhythmias (VAs) originating from the anterosuperior left ventricular outflow tract (LVOT) represent a challenging location for catheter ablation. This study investigates mapping and ablation of VA from anterosuperior LVOT via a transseptal approach. METHODS AND RESULTS This study included 27 patients with symptomatic VA, of which 13 patients had previous failed ablati...
The objective of this study was to analyze the effect cement thickness on strain and stresses resulting from polymerization resin using photoelasticity Finite Element Analysis (FEA). For study, twenty upper first premolars with inlay cavity preparation were constructed photoelastic restored composite inlay. samples divided into two groups (n = 10) according film material. Group 1, 100 ?m; for 2...
Talon cusp is an odontogenic anomaly in anterior teeth, caused by hyperactivity of enamel in morphodifferentiation stage. Talon cusp is an additional cusp with several types based on its extension and shape. It has enamel, dentin, and sometimes pulp tissue. Moreover, it can cause clinical problems such as poor aesthetic, dental caries, attrition, occlusal interferences, and periodontal di...
talon cusp is an accessory cusp similar to a projection, extending from the cingulum or cemento-enamel junction to the incisal edge. it occurs on labial or palatal surfaces of primary or permanent anterior teeth in both arches. this accessory cusp can occur as an isolated entity or in association with other dental anomalies. occurrence of a talon cusp on supernumerary teeth is rare and uncommon...
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