Vertical Dimensional Changes Following Horizontal Alveolar Ridge Augmentation

Abstract

Background: Researchers commonly distinguish horizontal alveolar ridge augmentation (HRA) procedures from those aiming to augment the vertical dimension of the edentulous ridge. However, incidental vertical changes occurring after HRA remain poorly characterized in the periodontics literature. Purpose: The objective of this study was to assess vertical dimensional changes following HRA. Materials and Methods: This study included CBCT volumes from 65 HRA sites in 57 patients. Baseline and postoperative CBCT volumes were superimposed using three-dimensional analysis software. Changes in the vertical alveolar ridge dimensional (VRD) were recorded considering a panel of patient-, site-, and procedure-related explanatory variables. Results: VRD changes ranged from -2.9 to 3.0 mm, more than half the anterior sites losing alveolar ridge height. Overall, 24 HRA sites (37 percent) lost VRD, 24 sites (37 percent) gained VRD, and 17sites (26 percent) exhibited no change in the vertical dimension of the alveolar ridge. In a two-sample test of proportions, 11 of 21 anterior sites (52 percent) and 13 of 31 posterior sites (30 percent) exhibited decrease in VRD. This difference was not statistically significant (p = 0.074). Four factors in the present study were associated with a mean reduction in VRD anterior site, maxillary site, lack of membrane fixation, and use of a resorbable barrier membrane. Conclusion: Minor alterations in the VRD following HRA may be of limited clinical consequence, particularly at posterior sites. However, loss of VRD is generally undesirable, and as such may compromise esthetics and/or limit effectiveness of personal hygiene practices. Findings of the present study suggest that variables affecting post-HRA VRD reduction are partially under the control of the clinician.

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Document Details

Document Type
Technical Report
Publication Date
Aug 02, 2021
Accession Number
AD1186180

Entities

People

  • April P. Bumpers

Organizations

  • Uniformed Services University of the Health Sciences

Tags

DTIC Thesaurus Topics

  • Acquisition
  • Blood Coagulation
  • Bone And Bones
  • Bone Regeneration
  • Bones
  • Data Science
  • Fluoropolymers
  • Health
  • Health Services
  • Information Science
  • Jaw
  • Linear Regression Analysis
  • Materials
  • Peptide Growth Factors
  • Regression Analysis
  • Soft Tissues
  • Statistical Analysis
  • Test And Evaluation
  • Three Dimensional
  • Tissues
  • Universities
  • X-Ray Computed Tomography

Fields of Study

  • Medicine

Readers

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