Comparative evaluation of coronally positioned flap with prereacted glass ionomer (Giomer) and zirconia-reinfused glass ionomer (Zirconomer) in the treatment of gingival recession incidental with non-carious cervical lesions: A randomized clinical trial.

内容摘要

The study compared the clinical effectiveness of Giomer and Zirconomer in patients with gingival recession (GR) associated with noncarious cervical lesions (NCCLs), and evaluated their outcomes when combined with coronally advanced flap (CAF). Nine subjects with bilateral Cairo et al. recession type 1 associated with NCCL suggestive of CAF with restorations underwent a split-mouth randomized clinical trial. Eighteen sites were randomly assigned to one of the two groups and restored using Zirconomer (Group A) or Giomer (Group B). CAF was performed after 2 weeks, and patients were followed up at 3 and 6 months. Plaque index (PI), gingival bleeding index (GBI), pocket depth (PD), relative GR (RGR), clinical attachment level (CAL), height of NCCL (NCCL-H), thickness (KTT), and width (KTW) of keratinized tissue and dentinal hypersensitivity (DH) were recorded at baseline, 3, and 6 months postsurgery. Both groups revealed excellent root coverage and CAL gain, although Group A significantly had higher KTW than Group B. After 6 months, the PI, PD, CAL, RGR, and KTW displayed statistically notable variations between the groups. At 6 months, Group A displayed better relief in DH as well as improved RGR and CAL. Both Zirconomer and Giomer, coupled with CAF, achieved sufficient soft-tissue coverage after 6 months. The Zirconomer group, however, had marginally better outcomes in terms of PI, RGR, NCCL-H, KTW, and DH, while Giomer performed better in terms of PD and CAL.