Objective To determine the correlation between periodontal index (plaque index, bleeding index and periodontal probing depth) and tongue coating.Methods One hundred and seventeen patients with periodontitis were included. Plaque index (PLI), bleeding index (BI) and periodontal probing depth (PD) were examined. Tongue coating was estimated with thickness (Tt) and area (Ta) on the dorsal surface of tongue. The same examinations were repeated on 46 subjects after periodontal therapies of scaling and root planning (SRP).Results The correlation was analyzed (Spearman correlation coefficient). There was a significantly positive correlation between the BI (~2.8 ) and the Tt (~2.2 ) (r=~0.387 ;P~0.01 ) and between the PLI (~2.3 ) and the Tt (r=~0.311 ; P~0.01 ). The PD (~3.4mm ) was also correlated with the Tt (r=~0.218 ;P~0.05 ). No correlations were found between the PD, BI, or PLI and the Ta (~2.6 ). Reduction of the PLI, BI and PD after periodontal therapies was statistically significant (Paired t-tests; P~0.01 ). There was also a significantly reduction in the Tt when baseline (~2.5 ) is compared to the post-periodontal therapy value (~2.2 ) (P~0.01 ). No changes were found for Ta.Conclusion The tongue coating (chief thickness of tongue coating) was significantly correlated with the periodontal indices, especially gingival inflammation (BI) and condition of oral hygiene (PLI). Periodontal therapy results in a reduction of tongue coating.
Acellular allogeneic dermal matrix(ADM)is the dermal replacement of heterogenous human skin in which the cellular elements have been removed by special technique and basement membrane complex have been remained.It becomes a kind of 3D porous acellular dermal scaffold.It supports fibroblast infiltration,neovascularization and epitheli-alization in the absence of an inflammatory response.As a new biomaterial scaffold,ADM has better tissue compatibility and lower antigenicity.It has been used in the field of periodontics.
Objective To compare the reproducibility of probing depth (PD) measurements using the Florida probe and the conventional periodontal probe.Methods Before and after initial periodontal treatment, five patients with chronic periodontitis received repeated PD measurements using the Florida probe and the conventional periodontal probe, respectively. The reproducibility of PD measurements was compared between the two different probes. The reproducibility of PD measurements using the same probes was also compared before and after the treatment.Results The reproducibility of PD measurements with both of these probes was good (P~0.05 , r=~0.77 ～~0.85 ) for both before and after initial treatment. Before the treatment, the reproducibility of these two probes was similar. After treatment, the reproducibility of the Florida probe was better than that of conventional periodontal probe (P~0.05 ).Conclusion The reproducibility of PD measurements with the Florida probes is reliable, suggesting that it can be applied in clinical research.
