Ridge Preservation With Provisional Ovoid Pontic

Federal University of Juiz de Fora

Status: Completed

Conditions: Alveolar Process Atrophy

Treatments: Procedure: Surgical procedures

Study type: Interventional

Funder types: Other

Identifiers

NCT03166475

Reabilitação Oral

Details and patient eligibility

About

A prospective randomized controlled trial of 30 patients from the Faculty of Dentistry of the UFJF was conducted. It was included patients who presented indication of extraction of premolars, canines or incisors. All the thirty patients underwent dental extraction and were randomly divided into three groups according to the study methodology. Plaster casts and Cone-Beam Computed Tomography (CBCT) exams were performed for comparative analysis between sample groups and between study times ( imediate postoperative and four months later).

Full description

Thirty consecutive patients who presented at the Dentistry College of Federal University of Juiz de Fora (Brazil) were selected, requiring a single-tooth extraction of premolar, canines or incisors in maxilla. All of the patients included at this study signed a free and informed consent form, agreeing to participate voluntarily in this research. The study was approved by the Research Ethical Committee of the University of Juiz de Fora under the form 1.731.395.

The patients were randomly allocated in three groups according the following treatments:

• Group 1: Closure of the socket by primary intention through a palatal pedicle subepithelial connective tissue flap by the technique of Khoury & Happe (2000) (Figure 1);
• Group 2: Filling the socket with a synthetic bone substitute of biphasic calcium phosphate (Bone Ceramic®, Straumann) and covering it with a palatal pedicle flap by the technique of Khoury & Happe (2000) (Figure 2);
• Group 3: Sealing of the socket with a provisional ovoid pontic of acrylic resin (Figure 3).

As response factors were performed evaluations of study casts and tomographic analysis for dimensional stability evaluation of the sockets at immediate postoperative and after four months of the surgical procedures.

Enrollment: 30 patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Patients with indication of extraction of premolars, canines or incisors, which has two adjacent teeth, due to root fracture, extensive caries that did not allow unfavorable restorative and / or endodontic prognosis, systemically healthy.

Exclusion criteria

• Patients who use any drug that influences bone metabolism, patients with a history of head radiotherapy and neck, patients undergoing chemotherapy for the treatment of malignant tumors at the time of the study, patients with socket severely reabsorbed, smokers and pregnant women.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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30 participants in 3 patient groups

Palatal pedicle flap (Group 1)

Experimental group

Description:

On patients of this group were performed the palatal pedicle subepithelial connective tissue flap after the extraction, following the technique described by Khoury \& Happe (2000), which consists of total detachment of the palatal flap followed by division of the flap to release the connective tissue, maintain a pedicle and sliding it to cover the fresh socket by primary intention. The sutures were removed seven to ten days of postoperative.

Treatment:

Procedure: Surgical procedures

Graft + palatal pedicle flap (Group 2)

Experimental group

Description:

On patients of this group were performed the palatal pedicle flap like the group 1, however, the sockets were previously filled with a graft of synthetic bone substitute (Bone Ceramic®, Straumann, Switzerland) and then recovered with the connective flap and sutured by primary intention. The sutures were removed seven to ten days of postoperative.

Treatment:

Procedure: Surgical procedures

Provisional ovoid pontic (Group 3)

Experimental group

Description:

On patients of this group, after the extraction of the tooth, were made a provisional ovoid pontic with acrylic resin or with the crown of the removed tooth itself, cut and sealed with composite resin. The pontics were placed to seal the entire gingival margin of the socket and penetrating 2 to 3 mm into it, stabilized laterally by the adjacent teeth with orthodontic and composite resin or acrylic resin. No sutures were made.

Treatment:

Procedure: Surgical procedures