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IRCT20160213026538N3 IRCT 2018-11-18 Kermanshah University of Medical Sciences evaluation of the marginal adaptation of single unit crowns clinical evaluation of the marginal adaptation of metal ceramic single unit crowns fabricated by lost wax technique and new Computer Aided Design/Computer Aided Manufacturing technologies 2018-09-23 anticipated 60 Complete https://irct.ir/trial/32262 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Based on the random allocation law, after determining 60 maxillary and mandibular first molars based on statistical calculations, 20 cards for the Casting group, 20 cards for the CAD/Milling group, and 20 cards for the CAD/Ceramill Sintron group will be placed in a draw glass, then the cards will be dropped out randomly and without replacement and the resulting sequence will be recorded. Then, 60 envelopes are prepared and each random sequence created is recorded on a card and the cards are inserted into the envelope respectively. In order to maintain a random sequence, the envelopes are numbered to the same. In the end, the door covers are enclosed in boxes and placed in a box respectively. At the time of the start of the registration of the participants, according to the order of entry of qualified participants to study, one of the envelopes are opened in sequence and the participant's assigned group is revealed, Blinding description: in this clinical trial study, the main researchers involved in the prostodontics and students are blind to the assignment of each participant in each of the study groups. Participants in the study are blind toward their own group when they are aware of the similar costs and benefits of clinical treatments based on studies. Also the result analyst and the outcome evaluator, have no information about the data of each group. Only a health care worker knows about the groups. N/A marginal adaptation of single unit restorations. Intervention 1: Intervention group: application of metal ceramic crowns fabricated by CAD/Milling technique. Intervention 2: Intervention group: application of metal ceramic crowns fabricated by CAD/Ceramill Sintron. Intervention 3: Control group: application of metal ceramic crowns fabricated by traditional wax removal. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no more information.
public Mahsa Samavati
سایر حوزه‌های کاری/تخصص‌ها آدرس خیابان The school of Dentistry, shariati Street, Kermanshah
Kermanshah Iran (Islamic Republic of) 6713954658 +98 83 3845 0641 m93samavati@gmail.com Kermanshah University of Medical Sciences scientific Hedaiat Moradpour
Shariaty street
Kermanshah Iran (Islamic Republic of) 67139546581 +98 83 3727 7030 hedaiat.moradpoor@gmail.com Kermanshah University of Medical Sciences Iran (Islamic Republic of) good general health(no systemic disease that should negatively influence the clinical outcome) periodontally healthy(plaque index and bleeding on probing had to be below 20% previously to the prosthodontic treatment) no obvious signs or symptoms of bruxing and/or clenching((bruxismsuch as attritions and existing fractures on the patientsnatural teeth or reconstructions, no pain on muscular palpationor tendomyopathies, no pain causing joint sound, no selfreportedbruxing or clenching) abutment teeth in need of reconstruction (abutment teeth withexisting extensive cavities, fillings or crowns) non-vital abutment teeth with positive long-term prognosis uponclinical and radiological assessment (no peri-apical or apparentperiodontal lesions) the tooth should have enough periodontal support for single unit restoration an also minimal mobility the tooth should have enough preparation length to ensure the retention and resistance forms the patient is ready to take part in the study and sign the testimonial no limit no limit Both The patient is not willing or able to observe oral hygiene ( Plaque index and BOP should be below 20%). The abutment tooth has clinical sign. The tooth has grade two or more mobility. parafunctional habits Periodontitis, severe gingivitis, poor oral hygiene and high caries activity Treatment - Devices Treatment - Devices Treatment - Devices Intervention group: application of metal ceramic crowns fabricated by CAD/Milling technique Intervention group: application of metal ceramic crowns fabricated by CAD/Ceramill Sintron Control group: application of metal ceramic crowns fabricated by traditional wax removal Marginal adaptation of restorations. Timepoint: before and after veneering of restorations. Method of measurement: adaptation is measured using 3 methods:1-parallal bite wing radiography2-touch using a sonde3-silicone replica technique. Kermanshah University of Medical Sciences Approved 2018-01-03 Ethics Committee of Kermanshah University of Medical Sciences Ethics Committee, Department of Research and Technology, Central Building, Shahid Beheshti Boulevard, Kermanshah kermanshah Kermanshah Iran (Islamic Republic of)