Soft tissue augmentation applying a collagenated porcine dermal matrix during second stage surgery: A prospective multicenter case series.
- Fischer KR Department for Periodontology, Faculty of Health, Witten/Herdecke University, Witten, Germany.
- Testori T Department of Periodontics and Oral Medicine, University of Michigan, School of Dentistry, Ann Arbor, Michigan.
- Wachtel H Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Medicine Charité, University of Berlin, Berlin, Germany.
- Mühlemann S Clinic of Reconstructive Dentistry, University of Zurich, Switzerland.
- Happe A Department of Oral and Maxillofacial Plastic Surgery and Implantology, University of Cologne, Köln, Germany.
- Del Fabbro M Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy.
- 2019-07-17
Published in:
- Clinical implant dentistry and related research. - 2019
acellular dermal matrix
dental implant
gingival thickness
second stage surgery
soft tissue augmentation
Adult
Animals
Connective Tissue
Dental Implants
Gingiva
Humans
Maxilla
Middle Aged
Prospective Studies
Swine
English
BACKGROUND
The achievement and preservation of an adequate amount of soft tissue around implants is a critical factor for the prognosis of the treatment.
PURPOSE
To evaluate the effectiveness of a porcine dermal matrix applied during second stage implant surgery for horizontal soft tissue augmentation and preservation of dimensional stability.
MATERIALS AND METHODS
Twenty patients (mean age 50.2 ± 11.9 [SD] years) candidate to implant therapy and requiring soft tissue augmentation were recruited in four centers. Augmentation was performed in 24 cases. A porcine dermal matrix was placed into a buccal split-thickness pouch during uncovering surgery. Silicone impressions were taken before surgery (T0), 2 weeks later at suture removal (T2), 6 months (T3), and 24 months (T4) post augmentation. Dimensional changes of soft tissue were evaluated using superimposition of digitalized study casts.
RESULTS
Nineteen patients (23 implants) could be evaluated at 6 months and 13 patients (17 implants) at 24 months. After 6-month follow-up, there was a significant dimensional gain respect to baseline, averaging 0.83 ± 0.64 mm (P < .01). This did not change significantly at 24 months (0.77 ± 0.65 mm, P = .19). The gain was >0.5 mm in 65.2% and 64.7% of the cases, respectively. Soft tissue shrinkage averaged 34.2% ± 77.0% from T2 to T3 (P < .01) and did not change thereafter (P = .39). Shrinkage was more consistent in the posterior mandible than in the maxilla, but not significantly (P = .23 at 6-month and .36 at 24-month). No adverse events occurred.
CONCLUSION
Within the limitations of this prospective case series, the use of a porcine dermal matrix may provide consistent soft tissue augmentation that maintains up to 24-month follow-up, although graft shrinkage may occur in the first 6 months, depending on the location of surgery.
The achievement and preservation of an adequate amount of soft tissue around implants is a critical factor for the prognosis of the treatment.
PURPOSE
To evaluate the effectiveness of a porcine dermal matrix applied during second stage implant surgery for horizontal soft tissue augmentation and preservation of dimensional stability.
MATERIALS AND METHODS
Twenty patients (mean age 50.2 ± 11.9 [SD] years) candidate to implant therapy and requiring soft tissue augmentation were recruited in four centers. Augmentation was performed in 24 cases. A porcine dermal matrix was placed into a buccal split-thickness pouch during uncovering surgery. Silicone impressions were taken before surgery (T0), 2 weeks later at suture removal (T2), 6 months (T3), and 24 months (T4) post augmentation. Dimensional changes of soft tissue were evaluated using superimposition of digitalized study casts.
RESULTS
Nineteen patients (23 implants) could be evaluated at 6 months and 13 patients (17 implants) at 24 months. After 6-month follow-up, there was a significant dimensional gain respect to baseline, averaging 0.83 ± 0.64 mm (P < .01). This did not change significantly at 24 months (0.77 ± 0.65 mm, P = .19). The gain was >0.5 mm in 65.2% and 64.7% of the cases, respectively. Soft tissue shrinkage averaged 34.2% ± 77.0% from T2 to T3 (P < .01) and did not change thereafter (P = .39). Shrinkage was more consistent in the posterior mandible than in the maxilla, but not significantly (P = .23 at 6-month and .36 at 24-month). No adverse events occurred.
CONCLUSION
Within the limitations of this prospective case series, the use of a porcine dermal matrix may provide consistent soft tissue augmentation that maintains up to 24-month follow-up, although graft shrinkage may occur in the first 6 months, depending on the location of surgery.
- Language
-
- English
- Open access status
- green
- Identifiers
-
- DOI 10.1111/cid.12817
- PMID 31309705
- Persistent URL
- https://sonar.ch/global/documents/47559
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