Related Experiment Video
Updated: May 6, 2026
Treatment of Facial Deformities using 3D Planning and Printing of Patient-Specific Implants
Published on: May 23, 2020
Cortical tenting technique versus onlay layered technique for vertical augmentation of atrophic posterior mandibles:
Golnaz Morad1, Arash Khojasteh
1*Research Fellow, Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran. †Associate Professor and Director of Basic Science Research, Department of Oral and Maxillofacial Surgery, Dental Research Center, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Purpose:
This study intended to compare the efficacy of onlay layered and cortical tenting grafting techniques for vertical alveolar augmentation.
Materials And Methods:
Six patients with bilaterally edentulous atrophic posterior mandibles received 2 thin ramus blocks, covered with bovine bone mineral on 1 side (onlay layered technique), whereas in the opposite side (cortical tenting technique), a thin ramus block was placed over the ridge keeping a distance that was filled with particulate autogenous bone and bovine bone mineral (50:50). Bone height over the mandibular canal was measured on panoramic radiographies taken preoperatively, and 2 weeks and 4 months postoperatively.
Results:
The amount of augmentation in the tenting group (5.2 ± 0.76 mm) was higher than the onlay group (4.48 ± 0.51 mm). Graft resorption was 1.75 ± 1.08 mm in the onlay group and 1.17 ± 0.41 mm in the tenting group. Neither of the differences regarding the amount of augmentation and graft resorption was statistically significant (P = 0.345 and 0831, respectively).
Conclusion:
Both of the examined techniques might be favorable methods for vertical augmentation.
