The correct orientation of the occlusal plane is the first and one of the important steps while recording jaw relationships in an edentulous patient. One of the most popular methods is to orient the occlusal plane to interpupillary line anteriorly and ala-tragus lines posteriorly which is usually accomplished by repetitive adjustment of the maxillary rim until a hand-held Fox's plane appears to be parallel to these lines. However, this process is time-consuming and error-prone. The eventual plane is almost always an educated guess, and this can be difficult for a new student. The device presented in this article marks the occlusal plane on wax rims parallel to interpupillary line anteriorly and the ala-tragus lines posteriorly, and thus, occlusal plane can be oriented in one simple step, thereby saving time and increasing efficiency of the operator.
The choice of appropriate definitive restoration of endodontically treated teeth should be guided by the amount of remaining hard tissues as well as functional and aesthetic considerations. Post and-core materials with biomechanical properties similar to the dentin could also be advantageous in reducing the risk of root fractures. The high performance polymer Poly-ether-ether-ketone (PEEK) is an example of one such type of material. This case report describes the restoration of endodontically treated mandibular premolar with the use of CAD-CAM milled post and core system followed by restoration with full coverage porcelain fused to metal crown.
To evaluate the success rate, level of satisfaction, Retentive force, and Hard and Soft tissue evaluation with implant-supported overdentures with the Kerator ® attachment system, by means of a review of the literature. Materials and Methods: PICO approach was used for the clinical question. The research was conducted in PubMed ® , Google scholar ® , and Cochrane ® information sources using different strategies of text words and MESH terms. Articles were selected for study on kerator attachments.
Results:The evaluation focused on the six papers that met the inclusion and research requirements. The kerator attachment has been compared with various types of attachments. Analysis of studies has shown that difficulties and types of maintenance are related to loss of retention and if loss of retention is seen, then replacement of the nylon male component of the system is required. This article also focused on Patient satisfaction and the evaluation of hard and soft tissues. Conclusion: Kerator retention system seems to be the best to use with good retention and patient satisfaction, but require maintenance frequency.
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