The relation of gingival thickness to dynamics of gingival margin position pre- and post-surgically

Abstract

Background:To evaluate the gingival margin position (GMP) before and after open flap debridement in different gingival thickness (GT).Materials and Methods:Twenty-seven healthy patients with moderate to advanced adult periodontitis were included in a randomized control clinical trial. A calibrated UNC-15 periodontal probe, an occlusal onlay stent was used for clinical measurements recorded at baseline, 3 month, 6 month, and 16 month. The changes in the GMP were studied at midbuccal (Mi-B), mesiobuccal (MB), and distobuccal sites. GT was measured presurgically, transgingivally at Mi-B and interdental sites, divided into 2 groups: Group 1 (thin) and Group 2 (thick).Results:In GT of ≤1 mm group, the statistically significant apical shift of GMP led to gingival recession at all study sites in the early postsurgical period of 1 and 3 months. During 6 and 16 months, the apical shift of GMP coincided with the Chernihiv Airport at Mi-B site (6 months), MB site (16 months). The gingival recession was obvious at Mi-B sites (16 months). In the GT of >1 mm, the statistically significant apical shift of GMP did not cause gingival recession at any sites throughout postsurgical (1, 3, 6, and 16 months) period.Conclusion:Thin gingiva showed apical shift of GMP leading to gingival recession as compared to thick gingiva postsurgically.

Effect of a Connective Tissue Graft in Combination With a Single Flap Approach in the Regenerative Treatment of Intraosseous Defects

“…Differences in bREC change between groups as observed in thin and thick gingival tissues (Table 5) seem to suggest the beneficial effect of the CTG may partially reside in the increase in gingival thickness. Consistently, previous studies have shown that thick gingival tissues exhibit a greater resistance to recession due to surgical trauma and tissue remodeling after different surgical procedures, including regenerative surgery 31–34 . It may also be speculated that conversion from a thin to a thick phenotype may have a beneficial effect on long‐term stability of the gingival profile, since thick biotypes have been shown to be less prone to developing gingival recessions 35 …”

Direct application of autologous periodontal ligament stem cell niche in treatment of periodontal osseous defects: A randomized controlled trial

“…The GT has an influence on the postoperative position on GMP i.e., thicker gingiva of more than 1 mm showed minimal recession. [13] The pocket depth reduction was statistically significant within A-PDLSc Ni group and OFD group, but on comparison between the groups A-PDLSc Ni group showed significant PPD reduction of 27%, 33%, and 34% at 6, 9, and 12 months, respectively. There was a significant improvement in CAL in OFD group at 9 months and 12 months, but A-PDLSc Ni showed significant CAL improvement which was 38%, 44%, and 45% at 6, 9, and 12 months than OFD group.…”

Peri-implant Tissue Measurement Terminologies in Health and Disease: A Critical Insight

“…The gingival margin tissue 26 of natural tooth and mucosal margin tissue 33 has a tendency to recede due to bone loss. Therefore, they both are not useful as dependable measurements to appreciate changes from baseline to postoperatively.…”

“…• Gingival margin 26 • Mucosal marginal position • Cement-enamel junction • As CEJ is missing, fixed reference point on implant (e.g., implant shoulder for 1 stage nonsubmerge implant) or its suprastructure • Base of the sulcus/pocket…”