"Pontic-shield" Technique in Alveolar Ridge Preservation

Universidad Complutense de Madrid

Status: Enrolling

Conditions: Bone Loss; Bone Resorption; Tooth Extraction Status Nos

Treatments: Procedure: Alveolar ridge preservation; Procedure: "Pontic-shield" technique

Study type: Interventional

Funder types: Other

Identifiers

NCT05240417

21/028-EC_X

Details and patient eligibility

About

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.

Full 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.

Enrollment: 30 estimated patients

Sex: All

Ages: 18 to 80 years old

Volunteers: Accepts Healthy Volunteers

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

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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30 participants in 3 patient groups

Study group

Experimental group

Description:

"Pontic-shield" will be performed as ridge preservation technique.

Treatment:

Procedure: "Pontic-shield" technique

Positive control (ridge preservation)

Active Comparator group

Description:

Deproteinized bovine bone and porcine collagen membrane will be placed after tooth extraction.

Treatment:

Procedure: Alveolar ridge preservation

Negative control (fresh socket)

No Intervention group

Description:

No intervention will be performed after tooth extraction. Blood clot will be maintained after extraction.