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Missing Tooth clinical trials

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NCT ID: NCT03715842 Not yet recruiting - Missing Tooth Clinical Trials

Clinical Assessment Of Inlay Retained Bridge Designs (Tub Shaped And Inlay Shaped) In Missing Posterior Teeth Cases.

dentistry
Start date: March 11, 2019
Phase: N/A
Study type: Interventional

The interest in partial coverage retainers such as inlays and onlays have increased drastically because these restorations are able to provide a more conservative option requiring minimal tissue removal thus preserving healthy tooth structure to a maximum extent. If patient rejects an implant treatment and enough sound tooth structure is available it would be desirable to restore a missing tooth with Inlay-Retained Fixed Partial Denture instead of full coverage retained one . The use of all-ceramic materials for inlays and onlays in restorative dentistry is becoming more popular , the proper selection of restorative materials, careful preparation design and adequate adhesion between tooth/restorative material interfaces considered important factor to prevent failures . Zirconia was introduced into dentistry in the 1990s.The high initial strength and fracture toughness of zirconia results from a physical property of partially stabilized zirconia known as transformation toughening. On the other hand, its white color, similar to the color of natural teeth and its ability to transmit light makes it useful in aesthetically important areas . Inlay Fixed Partial Denture restoration may have increased the risk of fracture due to the relative small size of restorations compared to the complete coverage restoration. An unfavorable distribution of stresses between the ceramic inlay and tooth structure may result in marginal deterioration around the inlay or its failure. The direction of forces on the occlusal surface of Inlay Fixed Partial Denture may lead to the phenomenon of submargination, ceramic fracture, wear at interface and postoperative hypersensitivity which remain a problem that require further investigation. One of the most important factors in the success and longevity of a restoration is to have an accurate marginal fit. Ideally, the cemented restoration should precisely meet the finish line of the prepared tooth. In reality, clinical perfection is challenging to achieve and to verify.

NCT ID: NCT03614442 Not yet recruiting - Missing Tooth Clinical Trials

Effect of Slopped Shoulder Implant Neck vs Conventional Implant Neck Design on Crestal Bone Level in the Maxilla

Start date: July 30, 2018
Phase: N/A
Study type: Interventional

In implant dentistry, platform switching is a method used to preserve alveolar bone levels around dental implants. The concept refers to using an implant with slopped shoulder neck of narrower diameter on implants of wider diameter, rather than placing abutments of similar diameter, referred to as platform matching.The aim of the study is to compare the effect of bone-level implants versus the conventional implant on oral soft tissues.