Radiographic Assessment Of The Accuracy Of 3D Ridge Augmentation In Anterior Mandible Using Computer Guided Autogenous Cortical Shell Technique Versus Free Hand Technique

Обзор

\* this study aims to evaluate accuracy of fixation of the bone shells by a calculated distance which is always a challenging step for inexperienced surgeons to fix a cortical shells at the ideal position in the conventional protocol. the fixation guides used to make the shells precisely fixed at the proper position and angulation the problem is if it fixed with insufficient distance with proposed volume loss leads to totally insufficient volume gain for future implant placement * also to evaluate the efficacy of the CAD/CAM surgical guide during chin harvesting (harvesting guide ) procedure in reducing the risk of anatomical structure damage (mental neve) and patient morbidity with more accuracy compared with the standard technique and preserve the roots of the lower anterior teeth or any fracture to the inferior border of the mandible also allow to harvest the bone shells from the suitable area with cancellous bone which prevent bad split of the bone shells this trial versus free hand conventional cortical shell bone technique both harvested from symphysis area (chin), * also to evaluate thickness of implanted bone shells , the thickness should be enough to preserve the graft(autograft 50% and xenograft 50%) between the buccal and lingual bone shells * also aims to evaluate the vertical and horizontal bone augmentation achieved at the anterior mandible using computer-guided cortical shell bone technique.

Подробное описание

this study aims to evaluate accuracy of fixation of the bone shells by a calculated distance which is always a challenging step for inexperienced surgeons to fix a cortical shells at the ideal position in the conventional protocol.

the fixation guides used to make the shells precisely fixed at the proper position and angulation the problem is if it fixed with insufficient distance with proposed volume loss leads to totally insufficient volume gain for future implant placement

* also to evaluate the efficacy of the CAD/CAM surgical guide during chin harvesting (harvesting guide ) procedure in reducing the risk of anatomical structure damage (mental neve) and patient morbidity with more accuracy compared with the standard technique and preserve the roots of the lower anterior teeth or any fracture to the inferior border of the mandible also allow to harvest the bone shells from the suitable area with cancellous bone which prevent bad split of the bone shells this trial versus free hand conventional cortical shell bone technique both harvested from symphysis area (chin), * also to evaluate thickness of implanted bone shells , the thickness should be enough to preserve the graft(autograft 50% and xenograft 50%) between the buccal and lingual bone shells * also aims to evaluate the vertical and horizontal bone augmentation achieved at the anterior mandible using computer-guided cortical shell bone technique.

Вмешательства

• Процедура horizontal and vertical bone augmentation using computer guided cortical shell technique
  Computer-guided cortical shell technique in anterior mandible 3d defect using bone harvesting guide and fixation guides
• Процедура free hand cortical shell technique in anterior 3d defect
  vertical and horizontal ridge augmentation in anterior mandible using free hand cortical shell technique

Первичные конечные точки

• accuracy of the implanted bone blocks [Срок оценки: immediately post operative]

Вторичные конечные точки (1)

• bone gain vertical and horizontal [Срок оценки: 6 months]

Критерии участия

Критерии включения

• Age ranges from 20-60 years. No sex predilection.

Patients free from any systemic conditions and bone metabolism diseases that might interfere with the surgical intervention, soft tissue or hard tissue healing.

Edentulous anterior mandible with a horizontally deficient alveolar ridge that is less than 3mm in width and with a vertically defect at least 3mm in height.

The minimum number of missing teeth in the anterior mandible alveolar ridge is two adjacent teeth.

Критерии исключения

• Intra-bony lesions (e.g., cysts) or infections (e.g., abscess) that may retard the osteotomy healing.

Previous grafting procedures in the edentulous area

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

Здоровые добровольцы: Нет

Дизайн исследования

Распределение

Рандомизированное

Модель

Параллельные группы

Маскирование

Простое слепое

Основная цель

Лечение

Центры проведения

Список центров уточняется — проверьте первичный протокол.

Идентификаторы

NCT: NCT06691516 · Computer guided cortical shell

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

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