Using a New Collagene Matrix Polyvinilpyrrolidone Sponge in Treating Multiple Gingival Recessions : Case Reports
The aim of this case report study was to demonstrate the use of a new collagen polivinil pirrolidone sponge as an alternative to the connective tissue graft for the treatment of multiple gingival recessions. The aim of this case report study was to describe the use of polyvinil pyrrolidone collagene sponge as an alternative to the CTG in association with a CAF for the treatment of multiple gingival recessions.
INTRODUCTION:
Therefore, the availability of soft tissue substitutes appears useful for the treatment of these conditions. In fact, over the past decade, several biomaterials, such as biologic modifiers and barrier membranes, have been investigated,10-13 but none of them revealed the same effectiveness of a CAF + CTG.3 More recently, a new two layer xenogenic collagen matrix has been proposed as a graft substitute used in combination with a CAF to treat single gingival recessions.14 The results of that study in terms of complete root coverage and recession reduction seemed to indicate that the use of the new collagen matrix was a viable alternative to a CTG, with significantly lower patient morbidity.
MATERIALS AND METHODS:
30 patients (age range, 35 to 48 years) with maxillary and mandibular gingival recessions and complaints about an unesthetic smile associated with moderate dental hypersensitivity were treated in a private practice by means of the tunnel flap technique5 associated with the polivinil pirrolidone collagene sponge as a substitute for the CTG. Before treatment, all patients signed a consent form approved by the local authority.
At baseline, the following data and measurements were recorded: age, sex, tooth, recession class,15 recession depth (Rec), pocket depth (PD), keratinized tissue width (KT), dental surface discrepancy class,16 and presence/absence of dental hypersensitivity. In particular, the adopted classification of gingival recessions is based on the presence/absence of an adequate amount (2 mm) of keratinized tissue, noncarious cervical lesions, and interproximal attachment loss. Regarding the dental surface discrepancy classification, it is based on the presence/absence of an identifiable cement-enamel junction with or without step formation at the cervical level.
RESULTS:
At baseline, the 30 recessions showed a mean Rec of 2.9 mm (range, 1 to 5 mm), with a KT of 2.45 mm (range, 1 to 4 mm), and mean PD of 1.73 mm (range, 1 to 2 mm). According to the recent classification of gingival recessions. At 1 year, complete root coverage was achieved in 9 of 11 treated sites. The mean KT was 3.1 mm (range, 2 to 4 mm), and all patients noted complete resolution of the dental hypersensitivity.
CONCLUSIONS:
The use of polyvinyl pirrolidone sponge collage as an alternative to a CTG associated with a CAF resulted in successful treatment of multiple recessions and was perceived as a pleasant approach by the patients