"Pontic-shield" Technique in Alveolar Ridge Preservation

Universidad Complutense de Madrid30 enrolled

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.

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.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Enrollment

Conditions

Tooth Extraction Status Nos Bone Loss

Interventions

"Pontic-shield" techniquePROCEDURE

A 1mm thick fragment of the vestibular aspect of the root will remain after extraction (partial extraction)

Alveolar ridge preservationPROCEDURE

Particulate deproteinized bovine bone and porcine collagen membrane will be placed after tooth extraction

Eligibility

Sex: ALLMin age: 18 YearsMax age: 80 YearsHealthy volunteers:

Medical Language ↔ Plain English

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

Outcomes

Primary Outcomes

Bone resorption

Radiographic changes between preoperative (prior to tooth extraction) and postoperative (4 months after intervention) will be analyzed. This variation will be assessed by measuring changes in width and height (in millimeters) of the socket by superimposition of CBCT before and after the intervention.

Time frame: From the day of the extraction to 4 months after

Secondary Outcomes

Satisfaction assessed by visual analogue scale (VAS)

Postoperative pain with visual analogue scale (VAS) from 0 (no pain) to 10 (maximum pain)

Time frame: From the day of the surgical procedure to the seventh-day