Authors
Ayşegül Dağdelen, Mehmet Ali Yavan, Nihal Hamamcı
Published in
The Angle orthodontist. Jul 21, 2026. Epub Jul 21, 2026.
Abstract
To evaluate the effect of plaque-disclosing tablet (PDT) instructions on periodontal parameters in patients with bonded lingual retainers (LR).
Forty-two patients with bonded mandibular lingual retainers were randomly allocated to two groups. The traditional oral hygiene instruction (TOHI) group (n = 21; 17 females, four males) received conventional verbal and visual oral hygiene education. The plaque-disclosing tablet instruction (PDTI) group (n = 21; 18 females, three males) received the same instructions as the TOHI group plus specific education on the use of PDT. An additional control group without lingual retainers (n = 21; 14 females, seven males) received identical instructions as the TOHI group. Plaque index (PI), gingival index (GI), calculus index (CI), and bleeding on probing (BOP) were recorded on the mandibular anterior teeth immediately after retainer placement (T0), at 3 months (T1), and at 6 months (T2). Statistical analyses were performed using the Shapiro-Wilk test, one-way analysis of variance (ANOVA), least significant difference test, Tamhane T2 test, chi-square test, and repeated-measures ANOVA.
At T1, TOHI and PDTI groups exhibited significantly higher periodontal scores compared with the control group (eg, PI: TOHI 0.86 ± 0.65, PDTI 0.62 ± 0.65, control 0.27 ± 0.17; P < .05). At T2, periodontal parameters in the PDTI group were significantly lower than in the TOHI group whereas no significant differences were found between the PDTI and control groups (P > .05).
The use of plaque-disclosing tablets in patients with bonded lingual retainers may improve periodontal health.
PMID:
42479443
Bibliographic data and abstract were imported from PubMed on 21 Jul 2026.
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