Evaluation of the Effect of Leucocyte Platelet-Rich Fibrin (L-PRF) Technique Applied in Post-extraction Sockets Before Placement of Dental Implants

National and Kapodistrian University of Athens

Status: Active, not recruiting

Conditions: Dental Implants; L-PRF; Alveolar Bone Grafting; Osseointegration

Treatments: Procedure: Allograft and collagen membrane; Procedure: Allograft and L-PRF membrane; Procedure: L-PRF

Study type: Interventional

Funder types: Other

Identifiers

NCT07387913

415/23.05.2019

Details and patient eligibility

About

Aim of study: The application of L-PRF membrane in post-extraction sockets outmatches the use of a) allograft covered with a collagen fleece b) allograft combined with L-PRF membrane c) natural healing, with reference to bone remodeling and regeneration of post-extraction sockets.

Moreover, it will be examined whether the application of L-PRF membrane leads to faster bone maturation and creation of a favorable biological environment for earlier implant placement.

Materials and methods: This study is taking place in Athens University Dental School, in Oral and Maxillofacial Surgery Clinic. All patients participating in the present study received thorough informed consent. All forty patients participating in this study, were subjected in at least one atraumatic and flapless extraction of a single rooted tooth in the maxilla or mandible. Then, the patients were randomly divided in four categories with regards to management of the socket: a) no intervention i.e. Natural healing b) application of L-PRF membrane in the socket c) application of allograft (Phoenix) covered with a collagen fleece d) application of allograft (Phoenix) covered with a L-PRF membrane. Interrupted sutures will be performed for the four extraction socket groups.

Radiographic examination (localized CBCT) was obtained immediately before the extraction, as well as three months post-operatively (localized CBCT) in order to assess the changes in the alveolar ridge dimensions. The next stage of the study refers to the rehabilitation of the edentulous region.

Before each patient was subjected to dental implant placement, a bone biopsy was obtained.

Therefore, all the biopsy specimens obtained went through histological evaluation in order to assess qualitative and quantitative features.

Enrollment: 40 estimated patients

Sex: All

Ages: 18 to 85 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

1. Single-rooted teeth needed to be extracted in the maxilla or mandible
2. Patient in good general health as documented by self-assessment
3. Patients must be committed to the study and sign the informed consent
4. Adults only as participants

Exclusion criteria

1. No systemic medical condition that could interfere with the surgical procedure or planned treatment.
2. Smokers >20 cig/day
3. Current pregnancy or breast feeding
4. Radiotherapy or chemotherapy in head and neck area intravenous and oral bisphosphonates or anti-angiogenic drugs

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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40 participants in 4 patient groups

Group 1: Control

No Intervention group

Description:

In these post-extraction sockets no intervention takes place.

Group 2: Allograft and collagen membrane

Experimental group

Description:

In order to perform alveolar ridge preservation in this group allograft and collagen membrane are placed in the post-extraction sockets.

Treatment:

Procedure: Allograft and collagen membrane

Group 3: Allograft and L-PRF membrane

Experimental group

Description:

In order to perform alveolar ridge preservation in this group allograft and L-PRF membrane are placed in the post-extraction sockets.

Treatment:

Procedure: Allograft and L-PRF membrane

Group 4: L-PRF membrane

Experimental group

Description:

In order to perform alveolar ridge preservation in this group L-PRF membrane is placed in post-extraction sockets.

Treatment:

Procedure: L-PRF