Hard and soft tissue evaluation of alveolar ridge preservation compared to spontaneous healing: a retrospective clinical and volumetric analysis

International Journal of Implant Dentistry

Research

Roberta Grassi¹  Paolo Francesco Manicone²  Camilla Cavalcanti²  Giuseppe De Rosa²  Antonio D’Addona²  Paolo De Angelis²  Alessandro De Giorgi³  Alessandro Speranza⁴ 

[1] Department of Oral Surgery, Tor Vergata University, 00133, Rome, Italy;Division of Oral Surgery and Implantology, Department of Head and Neck, Institute of Clinical Dentistry, Oral Surgery and Implantology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, 00168, Rome, Italy;Polytechnic University of Turin, Turin, Italy;Private Practice, Rome, Italy;

关键词: Alveolar ridge preservation;    Bone graft;    Tooth extraction;   

DOI  :  10.1186/s40729-022-00456-w

 received in 2022-06-11, accepted in 2022-11-12,  发布年份 2022

来源: Springer

【 摘 要 】

PurposeThe remodeling process following tooth extraction can be observed as horizontal and vertical bone reduction of the alveolar ridge. Preservation procedures such as alveolar ridge preservation (ARP) aim to maintain the 3D volume of the extraction site. This retrospective study analyzed differences in the hard and soft tissue changes in patients treated with either spontaneous healing or ARP.MethodsAfter tooth extraction, the patients were treated either by spontaneous socket healing (SH group) or with ARP using a xenograft and a resorbable membrane (ARP group). One week before and 6 months after extraction, the patients underwent cone beam computed tomography. A volumetric analysis was performed by superimposing the digital models of the two time points. Intraoral radiography was performed after implant placement, upon prosthesis delivery, and at 1-year post-treatment. An esthetic assessment was conducted using the Pink Esthetic Score (PES). The patients’ overall satisfaction with the implant restoration was investigated at 12 months.ResultsIntragroup comparisons revealed significant differences between baseline and the 6-month follow-up in both groups at the measured locations (1 mm, 3 mm, and 5 mm below the most coronal aspect of the alveolar ridge) showing a reduction of the horizontal width (P < 0.05). Additionally, after treatment, the horizontal width at 1 mm was significantly different in the SH and ARP groups (P < 0.001), with mean changes of 2.03 ± 0.54 mm and 0.86 ± 0.49 mm, respectively. ARP was associated with an increased PES (11.6 ± 2.2) and a reduction in patients requiring additional grafting procedures in subsequent treatment phases (9% vs 26%; P = 0.11).ConclusionsIn both groups, significant horizontal and vertical bone loss was observed after the extraction. ARP can reduce linear and volumetric shrinkage of the alveolar ridge, leading to improved outcomes. It can also simplify implant restoration.Graphical Abstract

【 授权许可】

CC BY   
© The Author(s) 2022

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