Edentulous Alveolar Ridge, Mucogingival Deformity on Edentulous Ridge, Soft Tissue Atrophy
Conditions
Keywords
soft tissue graft, acellular dermal graft, collagen matrix
Brief summary
The purpose of the study is to compare soft tissue volume changes in terms of volume gain and stability around dental implants and PROMS in cases where a sub-epithelial connective tissue graft (SCTG) from the palate, Porcine collagen matrix (CM) or Porcine Acellular dermal matrix (PADM) is used after 3 and 15 months after implant placement.
Interventions
PROCEDURESoft Tissue graft augmentation
Donor site: SCTG group: The SCTG will be harvested in the palat,In order to extract the same thickness in each grafts a double-bladed knife (separated by 1,5mm) will be used. The donor area will be sutured. Recipient site: SCTG group: the connective tissue graft will be trimmed to the correct dimensions (10mm height, 12mm length and 1,5mm thick) and placed and secured at the recipient site with a resorbable 5-0 suture CM group: The CM graft (Geistlich Fibro-gide) will be trimmed to the indicated dimensions (10mm height, 12mm length) and placed and secured at the recipient site with resorbable 5-0 suture PADM Group: the ADM (NovoMatrix, Biohorizons, Birmingham AL) graft will be trimmed to the indicated dimensions (10mm height, 12mm length) and placed and secured at the recipient site with resorbable 5-0 suture
PROCEDUREImplant Placement
A crestal incision will be made in the implant reception area, extending from the distal of the most mesial tooth to the mesial of the most distal tooth. A mucoperiosteal flap will be elevated in the most crestal part of the ridge. The receptor bed will be prepared following the established drilling protocol for the placement of a BioHorizons Tapered Pro Implant (Biohorizons, Birmingham AL). The diameter and length of the implant will be previously established during the implant study. Later a healing abutment will be placed.
Sponsors
Universitat Internacional de Catalunya
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)
Intervention model description
controlled randomized prospective clinical study.
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
Patients referred to Department of Periodontology (CUO) in need of a single implant and need of soft tissue augmentation such as buccal defects, thin biotype, lack of keratinized tissue and aesthetic compromised situation. * The patient must be ≥18 years and able to understand the nature of the proposed surgery and must sign an informed consent. * The implant must be located between 2 fixed reference points (i.e. clinical crowns). * Anterior and premolar teeth (from premolar to premolar). * Enough crestal bone width to leave a minimum thickness of 2mm at the buccal bone plate when placing the implant. * Palate must have ≥2mm of thickness at premolar area. * Full mouth plaque and bleeding score \<20%.
Exclusion criteria
* Pregnant or lactation. * Active periodontal disease. * Previous soft tissue augmentation in the area. * Need of guided bone regeneration (GBR) during or after the placement of the implant. * Heavy smokers (\> 10 cigarettes per day). * Local or systemic conditions that would interfere with routine periodontal therapy (non-controlled diabetes mellitus, cancer, HIV, Chronic High dose steroid therapy, bone metabolic diseases, radiation, immunosuppressive disorders, liver function disorder, immunosuppressant disease, autoimmune disease). * Allergy to non-steroidal anti-inflammatory drugs. * Patients taking medications that cause gingival enlargement.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| soft tissue volume gain | after 3 months | Optical scans superposition |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Plaque index (PI) | at baseline, after 12 weeks and after 15 months. | Each tooth will be divided in 4 surfaces: buccal, lingual, mesial, distal. After the application of erythrosine, O'Leary plaque index will be registered (O'Leary et al. 1972) |
| Bleeding on probing (BI) | at baseline, after 12 weeks and after 15 months. | Each tooth will be divided in 4 surfaces: buccal, lingual, mesial, distal. After a gentle probing if the gingiva bleeds will be positive. |
| Probing depth (PD) | at baseline, after 12 weeks and after 15 months. | in the implant area (implant and both tooth next to it). Distance from the gingival margin to the bottom of the gingival sulcus using periodontal probe (UNC 15). Measured in 6 points: mesiobuccal, buccal, distobuccal, mesiolingual, lingual and distolingual. |
| soft tissue volume stability | after 15 months | Optical scans superposition |
| Phenotype evaluation (PT) | at baseline, after 12 weeks and after 15 months. | the gingival biotype was categorized as thin or thick based on the transparency of a periodontal probe (CP15 UNC; Hu-Friedy, Chicago, IL, USA) through the soft tissues while probing the buccal sulcus of the contra-lateral tooth (17-19) |
| Patient reported outcome measures (PROMs) | after the surgery procedures (baseline) and after 7 days (suture removal) | patient pain/discomfort will be evaluated (a questionnaire will be provided to each patient after all the surgery procedures and it will be recollected the day of suture removal) |
| Pink Esthetic Score (PES) | After 2 weeks of the definite crown placement (around 16 months) | will be registered to obtain information related to the papilla, the level of soft-tissue margin, the alveolar process, the color, contour and texture of the same soft tissue |
| Width of keratinized tissue (KT) | at baseline, after 12 weeks and after 15 months. | in the implant area (implant and both teeth nxt to it). Measured in the medial buccal point of the tooth/implant. Distance from mucogingival junction to the most apical portion of the crest of the marginal gingiva. The mucogingival junction will be identified by the roll technique, wherein the mucosa is rolled until the non-movable portion of the attached keratinized tissue is seen |
Countries
Spain
Contacts
Primary ContactAndres Pascual La Rocca, DDS
Backup ContactCristina Valles Vega, DDS
Outcome results
None listed