PURPOSE To compare the dimensional accuracy of three impression techniques- a separating foil impression, a custom tray impression, and a stock tray impression. MATERIALS AND METHODS A machined mandibular complete-arch metal model with special modifications served as a master cast. Three different impression techniques (n = 6 in each group) were performed with addition-cured silicon materials...

introduction: angle and internal position of lateral pterygoid muscle leads to contraction over two half of the mandible in maximum opening and protrusion position so it can affects impression prosthetic procedures. the aim of this study was to evaluate the mandibular flexure in two transverse and antro-posterior dimensions. methods: seventy edentulous patients at mashhad faculty of dentistry a...

PATIENT The patient was a 48-year-old partially edentulous male with microstomia. His chief complaints were masticatory disturbance and aesthetic problems caused by missing teeth. After trayless impressions for diagnostic casts were made, sectional trays and a sectional record block were used for the definitive impression and maxillomandibular registration. Maxillary and mandibular acrylic sect...

Because of their predictable results and conservation of tooth structure, ceramic veneers are indicated for the esthetic treatment of anterior teeth with anomalous positions or appearance. The objective of this case report is to highlight the steps in dental rehabilitation using ceramic veneers reinforced by lithium disilicate. In this case the patient had diastemas between the mandibular incis...

This study is a long-term follow up of 17 patients surgically treated for uncontrolled drooling, by retroposition of the ducts from the submandibular glands. Mean age was 16.8 years (range 7-31), with an average postoperation time of 9.2 years (range 1-18). Clinically, no subject revealed an impression of an extremely dry mouth, but most patients showed obvious permanent decrease in drooling af...

We report the simultaneous rehabilitation of an edentulous patient with a hybrid (zygomatic and conventional implants) all-on-four implant-supported prosthesis for the maxilla and a standard (conventional implants) all-on-four implant-supported prosthesis for the mandible. The transfer impression was made with a multifunctional guide and the upper and lower prostheses were placed 24h postoperat...

Objective: This case report aims to introduce the black triangle therapy in Miller’s Class IV gingival recession. Methods: The patient complained of spacing between upper and lower teeth causing food accumulation, “long teeth”, receding gums which were unaesthetic during speaking. Clinical examination maxillary mandibular anterior revealed Miller recession, large triangles, no tooth mobility no...