Periodontal Regeneration at the Distal Site of Second Molars After the Extraction of Lower Included Third Molars

NCT ID: NCT07059247

Last Updated: 2025-07-10

Basic Information

• Recruitment Status: NOT_YET_RECRUITING
• Clinical Phase: PHASE4
• Total Enrollment: 24 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-07-31
• Study Completion Date: 2026-09-30

Brief Summary

From an exclusively periodontal point of view, the extraction of third molars (3M) or wisdom teeth is relatively frequently recommended, either because they show reduced bone support or to avoid periodontal damage to the supporting bone of the adjacent second molar (2M). There are anatomical conditions that make plaque control difficult for the patient, and it is common to find periodontal pockets with significantly increased depths on the distal side of second molars that are or have been closely associated with an impacted third molar.

Among the periodontal considerations regarding impacted third molars, two aspects have traditionally been included: 1)The periodontal damage that certain impactions can cause to the periodontal health of the second molar, and 2) the periodontal sequelae or complications that the extraction of a wisdom tooth may leave on the distal surface of that second molar.

Various therapeutic approaches have been described in the literature to prevent periodontal damage following the surgical intervention involved in the extraction of a fully or partially impacted wisdom tooth. These include scaling of the distal surface of the 2M after extraction, modifications in the surgical technique - such as flap design or suturing method - and various regenerative techniques.

Within this context, the clinical research in which we invite the patients to participate will be developed. We will study the changes in bone levels on the posterior part of the second molar that is in contact with or close to the third molar, as well as the health of the soft tissues, after performing a conventional extraction protocol of the impacted lower third molar. This protocol includes the placement of a regenerative material of porcine origin (test procedure; enamel matrix derivatives) and will be compared to extraction without such material - and therefore without any attempt at periodontal regeneration (standard procedure). The patients will be closely followed up to one year after the surgical performance. This follow-up will be performed clinically and radiographically.

Conditions

Tooth Extraction; Wisdom Tooth Removal; Periodontal Regeneration

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: QUADRUPLE

Study Groups

Test group

Application of EMD after the extraction

Group Type: EXPERIMENTAL

Application of Enamel Matrix Derivatives

Intervention Type: BIOLOGICAL

After the extraction of the impacted lower third molar, EMD will be applied on the distal site of the second molar

Extraction of the impacted third molar

Intervention Type: PROCEDURE

Extraction of the impacted third molar

Control

No application of EMD after the extraction

Group Type: SHAM_COMPARATOR

Extraction of the impacted third molar

Intervention Type: PROCEDURE

Extraction of the impacted third molar

Interventions

Application of Enamel Matrix Derivatives

After the extraction of the impacted lower third molar, EMD will be applied on the distal site of the second molar

Intervention Type: BIOLOGICAL

Extraction of the impacted third molar

Extraction of the impacted third molar

Intervention Type: PROCEDURE

Eligibility Criteria

Inclusion Criteria

• Adult (< 18 years old) patients with impacted or semi-impacted lower third molars and with indication of extraction
• Systemically healthy patients
• Non-smokers or less than 10 cigarettes per day

Exclusion Criteria

• Patients with uncontrolled systemic diseases (ASA III-IV)
• Medication that potentially affects bone metabolism
• Absence of adjacent lower second molar
• Presence of crowns, distal caries or distal fillings of the adjacent second molar

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Universidad Complutense de Madrid

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Other Identifiers

23/308-EC_X

Identifier Type: -

Identifier Source: org_study_id