Abstract
Background:The presence of keratinized tissue around dental implants is more than desirable either from a functional and aesthetic point of view, making soft tissue grafting a common practice in implant rehabilitation. Autogenous soft tissue grafting procedures are usually associated with high morbidity. Aim of this study was to assess the efficacy of a xenogeneic collagen matrix as a substitute for soft tissue grafting around dental implants.Methods:15 consecutive patients underwent a vestibuloplasty and grafting, both in the mandible and the maxilla, with a collagen matrix.Results:The primary endpoint was to evaluate the resorption of the graft along with the re-epithelization grafted area. The percentage of the resorption was 44,4%, with a mean gain in vestibular height of 3 mm. Secondary endpoints evaluated the clinical appearance, the hemostatic effect and the post-operative pain. All subjects referred minimal pain with no bleeding. No adverse reaction nor infection were noted.Conclusion:This study showed that the used collagen matrix can find major interest in those patients who need a greater aesthetic outcome as the matrix has a perfect integration with the surrounding tissues. Furthermore it is strongly recommended for those patients who can bear little pain.Clinical Significance:Post-operative morbidity of autologous grafts is the biggest concern of this type of surgery. The possibility to use a soft tissue substitute is a great achievement as morbidity decreases and bigger areas can be treated in a single surgery.The present study showed the efficacy of a collagen matrix as this kind of substitute.
Highlights
For decades mucogingival surgery has been common practice in periodontology, with the precise endpoint to optimize the amount of keratinized soft tissues surrounding the natural teeth.Keratinized gingiva (KG) is a specialized mucosa covered with keratin or parakeratin that includes the free and the attached gingiva and extends from the gingival margin to the mucogingival junction [1].The presence of a certain width of keratinized tissue is important in maintaining periodontal health and preventing soft tissue recessions
This study showed that the used collagen matrix can find major interest in those patients who need a greater aesthetic outcome as the matrix has a perfect integration with the surrounding tissues
The possibility to use a soft tissue substitute is a great achievement as morbidity decreases and bigger areas can be treated in a single surgery
Summary
For decades mucogingival surgery has been common practice in periodontology, with the precise endpoint to optimize the amount of keratinized soft tissues surrounding the natural teeth.Keratinized gingiva (KG) is a specialized mucosa covered with keratin or parakeratin that includes the free and the attached gingiva and extends from the gingival margin to the mucogingival junction [1].The presence of a certain width of keratinized tissue is important in maintaining periodontal health and preventing soft tissue recessions. A number of studies suggest that a minimum of 2 mm of KG, corresponding to 1 mm of attached tissue, is necessary for a sustainable periodontal health [2]. The presence of this specialized mucosa appears to facilitate plaque control, improving patient comfort and prevent gingival recession [3, 4]. As well as natural teeth, the presence of keratinized tissue is more than desirable around dental implants, especially in the aesthetic zone. The presence of keratinized tissue around dental implants is more than desirable either from a functional and aesthetic point of view, making soft tissue grafting a common practice in implant rehabilitation. Aim of this study was to assess the efficacy of a xenogeneic collagen matrix as a substitute for soft tissue grafting around dental implants
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