We Will Assess Zirconia Crown Restoring Endodontically Treated Posterior Teeth With Two Finish Line Designs and Two Occlusal Reduction Schemes

Официальное название

Evaluation of Zirconia Crown Restoring Endodontically Treated Posterior Teeth With Two Finish Line Designs and Two Occlusal Reduction Schemes(a Randomized Clinical Trial)

Обзор

Endodontically treated posterior teeth will be restored with zirconia crowns with two finish line designs(feather edge and rounded shoulder) and two occlusal reduction schemes(flat and planer).The crowns were designed with exocad software program .After cementation clinical performance in terms of marginal adaptation ,marginal discoloration, fracture and secondary caries was evaluated at 3 subsequent follow-up visits every 3months for 1 year.

Подробное описание

Endodontically treated posterior teeth require full coverage coronal restoration, as they are more prone to fracture as compared to vital teeth .Over past two decades restorative dentistry there has been a paradigm shift in restorative dentistry towards monolithic zirconia crowns because of its superior esthetics ,excellent biocompatibility ,and continually improving biomechanical properties. For the long term clinical success of zirconia crowns tooth preparation designs particularly finish line designs and occlusal reduction play significant role. Different finish lines designs such as chamfer and shoulder, play a role in marginal fit of restoration .While assessing zirconia crowns of two finish line designs and two occlusal reduction schemes the participants were divided into three groups based on preparation design: the control group PS (planer occlusal and rounded shoulder) ; first interventional group (flat occlusal and feather); Second interventional group (flat occlusal and rounded shoulder) .To minimize bias the outcome assessor ,participants and statistician were blinded and only investigator will not blinded. After cementation on subsequent follow-up of one year with every three months interval United states Public Health Services Criteria (USPHS) is used for marginal adaptation ,discoloration, fracture and secondary caries, and gingival index score system is used for gingival response.

Second interventional group FS (Flat occlusal + rounded shoulder)

Вмешательства

• Другое Control group(PS)Planer occlusal scheme with rounded shoulder finish line
  Control group (PS) will have planer occlusal scheme with rounded shoulder finish line.
• Процедура First intervention group(FF) flat occlusal scheme with feather edge finish line
  First intervention group we will have flat occlusal scheme with feather edge finish line
• Процедура Second intervention group(FS) flat occlusal with rounded shoulder finish line design
  Second intervention will have flat occlusal scheme with rounded shoulder finish line design

Первичные конечные точки

• Gingival index score system and United States Public Health Services Criteria(USPHS) [Срок оценки: One year]

Критерии участия

Критерии включения

• patients from both genders.
• age range 18-65 years.
• patients with endodontically treated posterior teeth.

Критерии исключения

• vital teeth
• anterior teeth.
• edentulous patient.
• patient with history of significant systemic diseases.

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Да

Дизайн исследования

Распределение

Рандомизированное

Модель

Параллельные группы

Маскирование

Двойное слепое

Основная цель

Другое

Центры проведения

Пакистан · 2 центра

• Armed Forces Institute of Dentistry — Rawalpindi
• Armed Forces Institute of Dentistry — Rawalpindi

Идентификаторы

NCT: NCT07139613 · zirconia crowns

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

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