نتایج جستجو برای: crown fracture
تعداد نتایج: 112843 فیلتر نتایج به سال:
BACKGROUND Multiple risk factors have been identified for traumatic dental injuries, including crown fractures, in various age groups and various populations. The objective of this study was to determine the prevalence, risk factors and family related factors for crown trauma among 8 to 16 year-old children in a suburban population, Nigeria. METHODS This is a secondary analysis of a data of 2...
STATEMENT OF PROBLEM Cast posts require sufficient length for prosthesis retention and root strength. For prefabricated metal and fiber posts, the effects of different post lengths on the strength and internal stress of the surrounding root need evaluation. PURPOSE The purpose of this study was to examine, using both experimental and finite element (FE) approaches, the influence of post mater...
No studies are available that evaluate the retention of disilicate crowns according to different cementation procedures. The purpose of this study was to measure the retention of lithium disilicate crowns cemented using two different cementation systems. Twenty extracted mandibular premolars were prepared. Anatomic crowns were waxed and hot pressed using lithium disilicate ceramic. Teeth were d...
Intrusive luxation is a type of recognizable luxation injury represented by a deeper axial displacement of the tooth toward the alveolar bone. Treatment strategies include waiting for the tooth to return to its position, immediate surgical repositioning, and repositioning through dental traction by orthodontic devices. The aim of this case report was to present the management of severe dental t...
Early restoration of the masticatory function, phonatory and aesthetics is some of the current goals of the therapy based on endosseous implants. Facing the classic protocols of implant insertion, which recommend a period of several months between extraction and implant placement, alternatives have been developed that demonstrate that immediate implant placement after tooth extraction permits a...
The treatment options of enamel dentin crown fractures with pulpal exposure in the primary dentition traditionally consist of direct pulp capping, pulpotomy, pulpectomy, or extraction. Many clinicians disagree on the most appropriate treatment, and individual preferences exist within dentistry. Partial pulpotomy, also known as the Cvek pulpotomy, is a mode of treatment which is widely used in t...
The general dental practitioner must consider orthodontic extrusion of a tooth when a subgingival defect, such as, crown fracture occurs before prosthetic rehabilitation, especially in the aesthetic zone. Extrusion enables the root portion to be elevated which exposes sound tooth structure for placement of restorative margins. This case report describes the multidisciplinary management of a fra...
An abutment for a fixed partial denture may not contain enough tooth structure, such that the abutment does not provide an adequate 'ferrule effect'. A crown or bridge dental prosthesis that is cemented onto such an abutment/s may undergo biomechanical failure. Here, the tooth, core, and post complex, on which the crown is cemented, may fracture off from the abutment, causing the crown to separ...
Crown fracture of maxillary anterior teeth is frequent dental injuries for which patients seek immediate dental treatment. Immediate reattachment of the intact fractured tooth segment is a therapeutic choice in such cases. This case report presents one of the best methods used for reattachment, which is an ultraconservative technique. It allows the restoration of original tooth contour, colour ...
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