Normal 0 false false false EN-US X-NONE AR-SA Lever is a solid part that can turn on a fulcrum. There are three types of fulcrums. The efficacy of a lever system is measured by mechanical advantage. The first type of lever has the most and third type has the least mechanical advantage. The situation of muscles attachments and direction of forces on ...

Normal 0 false false false EN-US X-NONE AR-SA  Teeth and periodontal ligaments can resist more efficiently opposing vertical forces parallel to their axial axis in comparison to horizontal forces. Thus, in designing dental prostheses and preserving interocclusal relationships we should notice to eliminate horizontal forces on teeth. A partial prost...

Normal 0 false false false EN-US X-NONE AR-SA In some clinical interventions, there have been some doubts on replacing resin veneers by etched porcelain veneers. Never the less, Public awareness and demand for more aesthetic treatments caused increased usage of laminate veneers in operative treatments as routine treatment method. Dental material co...

Normal 0 false false false EN-US X-NONE AR-SA Granular cell schwanomma is a rare benign tumor that has been reported sporadically. Our case was a 38 year old man with a pink to yellow small lump of 5mm in right buccal mucosa without any complaint of pain or hemorrhage. Microscopic evaluations showed malpighian epithelium with intense hyperplasia in...

Normal 0 false false false EN-US X-NONE AR-SA Currently, the application and use of porcelain inlays and onlays for anterior and posterior teeth that are made in laboratory is increasing. Present article is aimed to evaluate 1. Advantages of porcelain include their aesthetic, strength, low chair-side, biocompatibility and do not depending on metals...

Normal 0 false false false EN-US X-NONE AR-SA In 9 patients of 11-20 years old, Pulp response to phosphoric acid 37% during a 15 seconds etching period was studied. Class V cavities in cervical third of premolars were prepared as symmetrical couples. All the process was identical in both groups of case and control. In test group, 15 seconds etching...

Normal 0 false false false EN-US X-NONE AR-SA In present study, 12 patents (10 F/2M) of 19-42 years with gingival recession in 14 sites of the mouth were recruited. Inclusion criteria were considered and following primary treatments, measurements (sulcus depth as well as depth and width of gingival recession and distance between a fixed point and g...

Normal 0 false false false EN-US X-NONE AR-SA Periodontal ligament changes depend on amount, duration and type of forces. Teeth movement toward periodontal ligament starts from the initial hours by formation of pressure and traction areas. These areas as well as vascular system must be preserved under the forces. Bone loss is resulted from osteocla...

Normal 0 false false false EN-US X-NONE AR-SA In current survey, 200 general dentists and 98 general physicians were recruited  as test and control groups respectively and analyzed for having osteoarthritis. The prevalence of osteoarthritis was found considerably higher in dentists compared to physicians ( 23.5% to 13.3%) . The mean age of dentists ...

Normal 0 false false false EN-US X-NONE AR-SA Pleomorphic adenoma is the most prevalent tumor of salivary glands. In present survey, the cases are selected for analysis from 4 valid centers of the country. Of 573 salivary gland tumors, 342 (60%) were Pleomorphic adenoma of which 189 cases located in major salivary glands mostly in parotid gland and ...