The aim of this prospective randomized controlled clinical trial was to evaluate the effectiveness of 3 modalities for coronal advancement of gingival margins to achieve root coverage, namely, Coronally Advanced Flap (CAF), Vestibular Incision Subperiosteal Tunnel Access (VISTA) and Intrasulcular tunneling (IST). Another aim of this study was to determine whether the addition of Leukocyte-Platelet Rich Fibrin (L-PRF) had any additional clinical benefits for the treatment of multiple gingival recession defects.
Material and Method:Participants with Miller class I, II or III recession defects are currently being recruited for this study. Study models were obtained from each of the participants at pre-operative baseline, as well as at 12, 24 and 52 weeks post-op. Study models were optically scanned and digitally superimposed over pre-operative CBCT images in Amira 3D Visualization and analysis software. Measurements included
Total dehiscence: CEJ-bone crest
Covered dehiscence: Gingival margin-bone crest
Recession depth- CEJ-gingival margin
Gingival margin thickness at 1, 2, 3, 4, 5
Results: The analysis of a representative sample at baseline is shown in Figure 1, illustrating superimposition of surface optical scans over CBCT imaging. This has allowed for determination of following quantitative measurements shown in Table 1.
Conclusion: Superimposition of surface optical scans over CBCT imaging is a novel technique which allows for many clinically useful measurements, which will be used in the present investigation.