Coronally positioned flap plus resin-modified glass ionomer restoration for the treatment of gingival recession associated with non-carious cervical lesions: a randomized controlled clinical trial.
BACKGROUND
The aim of this randomized clinical trial was to evaluate the treatment of gingival recession associated with non-carious cervical lesions by a coronally advanced flap alone (CAF) or in combination with a resin-modified glass ionomer restoration (CAF+R).


METHODS
Nineteen subjects with bilateral Miller Class I buccal gingival recessions associated with non-carious cervical lesions were selected. The recessions were assigned randomly to receive CAF or CAF+R. Bleeding on probing (BOP), probing depth (PD), relative gingival recession (RGR), clinical attachment level (CAL), non-carious cervical lesion height (CLH), and dentin sensitivity (DS) were measured at baseline; 45 days; and 2, 3, and 6 months postoperatively. Keratinized tissue width (KTW) and keratinized tissue thickness (KTT) were measured at baseline and 6 months. The height of the non-carious cervical lesion located on the root and crown were estimated, allowing calculation of root coverage.


RESULTS
Both groups showed statistically significant gains in CAL and soft tissue coverage. The differences between groups were not statistically significant for BOP, PD, RGR, CAL, KTW, and KTT after 6 months. The percentages of CLH covered were 56.14% +/- 11.74% for CAF+R and 59.78% +/- 11.11% for CAF (P >0.05). The root and crown surfaces affected by the non-carious cervical lesion were 1.67 +/- 0.31 mm and 0.96 +/- 0.29 mm, respectively, for CAF+R and 1.59 +/- 0.37 mm and 1.01 +/- 0.33 mm, respectively, for CAF. The estimated root coverage was 88.02% +/- 19.45% for CAF+R and 97.48% +/- 15.36% for CAF (P >0.05). CAF+R reduced DS significantly compared to CAF (P <0.05).


CONCLUSIONS
Both procedures provided similar soft tissue coverage after 6 months. Despite the fact that a greater reduction in DS was observed after CAF+R, longitudinal observations are necessary to confirm these results.
Santamaria
Mauro Pedrine
MP
Department of Prosthodontics and Periodontics, State University of Campinas, Piracicaba, SP, Brazil.
Suaid
Fabricia Ferreira
FF
Casati
Marcio Zaffalon
MZ
Nociti
Francisco Humberto
FH
Sallum
Antonio Wilson
AW
Sallum
Enilson Antônio
EA
D000328:Adult; D003131:Combined Modality Therapy; D003793:Dental Restoration, Permanent / Q000379:methods; D003807:Dentin Sensitivity / Q000628:therapy; D005260:Female; D005500:Follow-Up Studies; D005881:Gingiva / Q000473:pathology; D005884:Gingival Hemorrhage / Q000601:surgery; D005889:Gingival Recession / Q000601:surgery*; D005899:Glass Ionomer Cements; D006801:Humans; D008297:Male; D008875:Middle Aged; D017622:Periodontal Attachment Loss / Q000601:surgery; D010514:Periodontal Pocket / Q000601:surgery; D019279:Resin Cements; D013524:Surgical Flaps; D014072:Tooth Abrasion / Q000628:therapy; D019237:Tooth Cervix / Q000473:pathology*; D019228:Tooth Crown / Q000473:pathology; D014076:Tooth Diseases / Q000473:pathology / Q000628:therapy*; D014077:Tooth Erosion / Q000628:therapy; D014092:Tooth Root / Q000473:pathology
D005899:Glass Ionomer Cements; D019279:Resin Cements