title: [Comparison of acellular dermal matrix graft and palatal connective tissue graft in the augmentation of labial tissue around implants].
abstract: OBJECTIVE
  To compare the effect of palatal connective tissue graft and acellular dermal matrix (ADM) transplantation to improve the labial contour of implants.
  
  
  METHODS
  22 patients with single missing tooth and buccal soft tissue defects in the anterior maxilla underwent dental implant therapy. Simultaneously, 12 patients received palatal connective tissue transplantation, while 10 patients received ADM graft and all sites were studied for 12 months. The horizontal width of the alveolar crest were evaluated before surgery and 2 weeks, 3, 6, 12 months after surgery through cast study,statistical evaluation was completed with Student's t test using SAS6.12 software package to determine whether significant differences existed at the 95% significance level.
  
  
  RESULTS
  The survival rate for both groups during the 12- month follow-up was 100%. The horizontal widths of alveolar crest of both groups at the follow-up 2 weeks and 3, 6, 12 months were significantly higher than the preoperative values (P<0.05). There was no significant difference between the groups in horizontal width increase of alveolar crest at all time points postoperatively.
  
  
  CONCLUSIONS
  Palatal submucosal connective tissue graft and acellular dermal matrix subperiosteal transplantation can equally correct the buccal soft tissue defects around the dental implants.
authors.affiliation: Department of Oral and Cranio-maxillofacial Implantology, Ninth People's Hospital, College of Stomatology, School of Medicine, Shanghai Jiao Tong University, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Liu
authors.forename: You-you
authors.initials: YY
authors.lastname: Xu
authors.forename: Hong-chang
authors.initials: HC
authors.lastname: Lai
authors.forename: Zhi-yong
authors.initials: ZY
authors.lastname: Zhang
mesh_terms: D062088:Acellular Dermis; D003238:Connective Tissue; D015921:Dental Implants; D006801:Humans; D008046:Lip; D008437:Maxilla; D016378:Tissue Transplantation
chemical_list: D015921:Dental Implants