Overview
Alveolar bone resorption after dental extraction frequently leads to situations in which long-term function and esthetic success of rehabilitations with dental implants is a challenge. "Pontic-shield" has been described as an alternative technique to maintain alveolar ridge after tooth extraction.
The aim of this study is to analyze the effectiveness of "Pontic-shield" technique in alveolar ridge preservation comparing to fresh socket and ridge preservation using deproteinized bovine bone and a porcine collagen membrane.
Description
A three-arm randomized clinical study will be conducted:
- Group 1 (study group): Ridge preservation with "Pontic-shield" technique.
- Group 2 (positive control): Ridge preservation with deproteinized bovine bone and porcine collagen membrane after tooth extraction.
- Group 3 (negative control): Tooth extraction only (fresh socket).
A cone-beam computed tomography will be performed prior to tooth extraction and 4 months postoperative. Radiographic changes between before and after intervention will be evaluated to asses the effectiveness of "Pontic-shield" technique.
Eligibility
Inclusion Criteria:
- Patient from 18 to 80 years old
- Patients who sign the informed consent
- Need to perform extraction from second premolar to second premolar in maxilla and mandible
Exclusion Criteria:
- Tobacco consumption (more than 10 cigarettes per day)
- Severe systemic disease ( ASA III or IV - American Society of Anaesthesiology)
- Drug use that could interfere with alveolar bone healing
- Active periodontal disease
- Acute or chronic apical pathology of the tooth