Assessment of horizontal bone gain using computer guided vs. conventional cortical shell technique for horizontal maxillary alveolar ridge augmentation : Randomized Clinical Trial / By Dina Ayman Fayek Gayed, B.D.S 2018, Faculty of Oral and Dental Medicine, Future University in Egypt

Supervisors, Prof. Lobna Abdel Aziz Aly, Professor of Oral and maxillofacial surgery, Faculty of Oral and Dental Medicine, Future university in Egypt, Assist. Prof. Mohammed Mounir Ahmed, Assistant professor of Oral and Maxillofacial surgery, Faculty of Dentistry, Cairo University, Dr. Ahmed Mohamed Kamal Abu-Zekry, Lecturer of Oral and Maxillofacial surgery, Faculty of Oral and Dental Medicine, Future University in Egypt.

Thesis (M.Sc.)-Future University in Egypt, Faculty of Oral and Dental Medicine, Department of Oral and Maxillofacial surgery, 2022

Includes bibliographical references.

The aim of this study was to evaluate horizontal bone gain achieved at anterior maxilla using fully guided cortical shell bone technique and accuracy of fixation of the bone shell away from the atrophic ridge by calculated distance versus the conventional augmentation technique.
A total of 14 patient was enrolled in this study (9 males and 5 females; aged 18 to 60 years) with atrophic alveolar ridge at anterior maxilla were recruited from the outpatient clinic of Oral and maxillofacial surgery department, Faculty of oral and dental medicine – Future University in Egypt. The treatment modalities were randomly allocated (from October 2021 to September 2022) patients randomly divided into two groups
• Study group: anterior maxillary bone augmentation using fully computer guided autogenous cortical shell technique using harvesting guide and another fixation guide, a total of 12 implant.
• Control group: anterior maxilla bone augmentation using free hand autogenous cortical shell technique, a total of 10 implants.
Amount of bone gain
After 4 months, the CBCT used to measure mean amount of bone gain at three-point (crestal, 5 mm below the crest, 10 mm below the crest) and the result showed that the mean value of bone gain of Study group (3.86±0.74) mm was higher than the mean value of control group (3.09±1.31) mm yet the difference was not statistically significant (p=0.239)
the mean value of bone gain in percentage of the study group (112.59%±37.04%) was higher than the mean value of the control group (85.14%±40.38%) yet the difference was not statistically significant (p=0.248).
Accuracy
The study group show high accuracy of fixation of the bone shell away from the atrophic ridge by a calculated distance which is always a challenging step during conventional technique the results showed that the Mean value of planned horizontal bone gain of the Study group (8.447±0.67) mm was comparable to the mean value of the actual immediate postoperative bone gain (8.41±0.668)mm, and the difference was not statistically significant (p=0.92).

Text in English, abstracts in English and Arabic.