Clinical evaluation of the effectiveness of 3 laboratory fabrication methods on marginal adaptation of metal-ceramic single crowns, which are impressed digitally

Kermanshah University of Medical Sciences0 个研究点目标入组 60 人开始时间: 待定最近更新: 2019年10月7日

试验速览

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•Good general health (No systemic disease affecting the clinical outcomes)
•Periodontal health (Plaque index and BOP should be under 20% before prosthodontic treatment)
•No obvious signs or symptoms of bruxism and/or clenching (Bruxism such as attrition and fractures on the patient's natural tooth or reconstructions, no pain on muscular palpation or tendomyopathy, no pain due to joints, no self reported bruxism or clenching)
•Abutment teeth requires reconstruction (abutment teeth with existing extensive cavities, fillings or crowns)
•Non-vital abutment teeth with positive long-term prognosis based on clinical and radiological assessment (No obvious peri-apical or periodontal lesions)
•Sufficient periodontal support for single crown restoration and minimum mobility
•Sufficient tooth preparation length to ensure retention and resistance forms
•Patients should be satisfied to join our study and sign the consent

•Patients that are not willing or able to perform oral hygiene ( Plaque index and BOP more than 20%)
•Abutment tooth with clinical signs
•Tooth with grade two or more mobility
•parafunctional habits
•Periodontitis, severe gingivitis, poor oral hygiene and high active caries

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