Assessment of gingival translucency at the mandibular incisors with two different probing systems. A cross sectional study.

Kloukos, Dimitrios; Roccuzzo, Andrea; Staehli, Alexandra; Koukos, George; Sculean, Anton; Kolokitha, Olga Elpis; Katsaros, Christos (2024). Assessment of gingival translucency at the mandibular incisors with two different probing systems. A cross sectional study. Clinical oral investigations, 28(405) Springer-Verlag 10.1007/s00784-024-05672-9

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OBJECTIVES

Increasing evidence indicates that the thickness of periodontal soft tissues plays an important role in various clinical scenarios, thus pointing to the need of further clinical research in this area. Aim of the present study was to assess gingival thickness at the mandibular incisors by translucency judgement with two different probes and to validate if these methods are comparable and applicable as diagnostic tools.

MATERIALS AND METHODS

A total of 200 participants were included; gingival tissue thickness was measured by judging probe translucency at both central mandibular incisors, mid-facially on the buccal aspect of each tooth using a standard periodontal probe and a set of color-coded probe, each with a different color at the tip, i.e. Colorvue Biotype Probe (CBP). Frequencies and relative frequencies were calculated for probe visibility. Agreement between the standard periodontal probe and the CBP was evaluated via the kappa statistic.

RESULTS

When the periodontal probe was visible, the frequency of CBP being visible was very high. Kappa statistic for the agreement between the standard periodontal probe and the CBP was 0.198 (71.5% agreement; p-value < 0.001) for tooth 41 and 0.311 (74.0% agreement; p-value < 0.001) for tooth 31, indicating a positive association of the two methods.

CONCLUSIONS

An agreement that reached 74% was estimated between the standard periodontal probe and the color-coded probe at central mandibular incisors.  CLINICAL RELEVANCE: In the context of the present study, the two methods of evaluating gingival thickness seem to produce comparable measurements with a substantial agreement. However, in the 1/4 of the cases, the visibility of the color-coded probe could not assist in the categorization of the gingival phenotype.

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