Evaluation of different internal bleaching methods after application of two bioceramic formulations in revascularization treatment: an in vitro study

Résumé

To evaluate the staining potential of two bioceramic formulations, NeoPUTTY and NeoMTA Plus, in a revascularization model and to assess the bleaching efficacy of hydrogen peroxide with and without ultrasonic or diode laser activation at different application time intervals. Forty-two extracted permanent maxillary incisors were prepared for revascularization and randomly allocated to two groups: NeoPUTTY (GI) and NeoMTA Plus (GII). After 3 months, each group was further subdivided into three subgroups using the internal bleaching method: diode laser activation (a), ultrasonic activation (b), and no activation (c). CIELab* values were measured using the VITA Easyshade V spectrophotometer at pre-revascularization (T0), 3 months post-revascularization (T1), on the day of bleaching gel application (T2), and after one week (T3) and two weeks (T4) of bleaching gel application. All specimens showed significant decreases in L*, a*, and b* values at T1 (p < 0.001). Group I exhibited a non-significantly higher ΔE00 value between T0 and T1 than Group II (p = 0.142). All internal bleaching methods produced significant increases in L* and significant decreases in a* and b* at T3 compared with T1 (p < 0.001). GIa demonstrated a non-significantly higher ΔE00 value between T1 and T3 than GIb and GIc (p = 0.065), whereas GIIa exhibited a significantly higher ΔE00 value than GIIb and GIIc (p < 0.001). NeoPUTTY and NeoMTA Plus exhibited comparable staining potential. The bleaching efficacy of hydrogen peroxide was enhanced when the bleaching gel was activated with a diode laser and left in place for one week. A one-week application of a diode-laser-activated hydrogen peroxide bleaching gel may be an effective approach for reversing coronal discoloration following revascularization.

Citer ce document

Accès au document

Texte intégral en lecture en ligne, réservé aux abonnés SPHAERO et aux membres de l'institution. Se connecter

Auteur(s)

Statistiques

Consultations : 1

Téléchargements : 0