Endodontically Treated Teeth Clinical Trial
Official title:
Evaluation of Apical Gap Length and Adaptation of Custom Made Zirconia Post Using Digital Intraoral and Extraoral Scan of Conventional Silicon Impression Technique. (Randomized Controlled Clinical Trial)
First, participants will undergo clinical and radiographic examination for taking all the needed preoperative records, then endodontically treated teeth preparation starting with removal of any carious or undermined tooth structure then ferrule preparation then followed by intra-radicular preparation and then placement of the provisional restoration. In the third visit we will take the final impression of the post space for each patient by using the intraoral scan and extraoral scan o f the conventional impression. Then assessment of the apical gap length by using digital periapical radiograph using the paralleling technique and assessment of post adaptation using replica technique followed by placement and permanent cementation of the zirconia custom made post and core restoration that showed less apical gap length and better adaptation then taking the final impression for the extracoronal restoration and finally permanent cementation of the extra coronal fixed restoration.
Examination and diagnosis:Selection and examination of the patients according to inclusion and exclusion criteria. Diagnosis of the patient's chief complaint and teeth that will be involved in this study will be done. Primary impression will be taken to produce study cast. The patients will be asked to maintain good oral hygiene measures by using tooth brush twice daily. Taking a professional pre-operative photo. Tooth preparation procedure: 1. Removal of any carious or undermined tooth structure then coronal preparation will be done with a ferrule of at least 1.5 to 2 mm then followed by root canal preparation to an adequate length and diameter. 2. After tooth preparation, the final impression will be taken for the post space for each participant by using the intraoral scan and extraoral scan of the conventional silicone impression. 3. Fabrication of temporary restoration using composite resin temporary material and cemented using Zinc Oxide eugenol free temporary cement. Fabrication of restoration: Monolithic zirconia will be used for the fabrication of post and core restoration. Assessment of the apical gap length by using digital periapical radiograph using the paralleling technique. Assessment of post adaptation using replica technique followed by placement and permanent cementation of the zirconia custom made post and core restoration that showed less apical gap length and better adaptation. Taking the final impression for the extracoronal restoration. Finally permanent cementation of the extra coronal fixed restoration. ;
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