Evaluation of Performance, Safety and Benefit of the Wishbone HA as Bone Graft Substitute, a Pre-market Clinical Investigation

Wishbone SA96 enrolled

Overview

This investigation is a pre-market, prospective, multi-center, randomized, single blinded, parallel controlled clinical investigation performed in at least 5 clinical centers for confirmatory purposes of the use of WHA as intended in the filling of extraction sockets to enhance preservation of the alveolar socket.

In this study, the subjects will be pseudonymized and randomized in a 1:1 ratio between WHA and the selected comparator device Bio-Oss®. The sample size of the study has been computed based on a non-inferiority test between Bio- Oss® and WHA for device performance for the filling of extraction sockets. A total of 96 subjects will be enrolled. The results will be used to demonstrate the safety, performance and benefit of the product WHA in the socket indication in compliance with the MDR 2017/745. The endpoints are all accurately based on objective measurements: * Primary Endpoint: Bone reconstruction as measured by CBCT (in mm) after bone grafting procedure. * Secondary Endpoints: * Evaluation of implant stability at placement. * Assessment of bone density at the time of implant insertion. * Implant osteointegration at 3months after implant placement. * Evaluation of implant survival and success at 3-, 6-and12-months, 3-and 5- years after implant placement. * Rate of all Adverse Device Events (incidence, type, relatedness, severity, seriousness) from the time of grafting procedure up to 5 years after implant placement. * Patient satisfaction 6- and 12-months after implant placement. * Evaluation of the Sulcus index (peri-implant marginal tissue health status) at 6- and 12-months after implant placement.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

Conditions

Bone Regeneration Safety Issues

Interventions

Tooth extraction and bone graft procedureDEVICE

The subject will receive a flash dose of 2 gr of amoxicillin or 600 mg of Clindamycin 1 hour before the surgery. Tooth will be extracted using gentle techniques to guarantee an atraumatic extraction. If the socket presents insufficient bleeding, the clinician must use an appropriate procedure to induce bleeding. The extraction site must be carefully cleaned. Extraction socket will then be filled with WHA or Bio-Oss previously hydrated with saline solution (0.9%). Extraction socket packed with the graft will be covered with a collagen sponge (Geistlich Mucograft® Seal) and sutured (cross suture, Vicryl rapide 4.0). If required, a limited connective tissue graft can be placed in the vestibular region. A CBCT scan will be performed after the bone graft procedure, i.e., after the extraction socket and the biomaterial placement, to measure the initial bone width. The safety of the investigational device will be evaluated.

Eligibility

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

Medical Language ↔ Plain English

Inclusion Criteria: * The subject signed the informed consent form; * The subject is ≥ 18 and ≤ 80 years old at surgery; * The subject is in need of a tooth extraction prior to implant placement; * All four bony walls are preserved after extraction; * Minimum 8mm height of bone; * Minimum 7mm thickness of lingual vestibular; * The subject is willing and able to comply with all investigation related procedures (such as exercising oral hygiene and attending all follow-up visits); * Full-mouth bleeding score (FMBS) lower than 25%; * Full-mouth plaque score (FMPI) lower than 25%. Exclusion Criteria: * Subject with an acute infection (abscess) at the surgical site; * Subject with untreated periodontitis or periodontal disease; * Subject with autoimmune diseases or subjects that had received or were currently receiving treatment with antiresorptive drugs (e.g., bisphosphonates), or steroid therapy; * Subject who is pregnant or breastfeeding; * Subjects is a heavy smoker (\>10 cigarettes a day); * Subject with an inability to conduct basic oral hygiene (poor oral hygiene and motivation); * Subject with metabolic diseases (diabetes, hyperparathyroidism, osteomalacia); * Subject with severe renal dysfunction and severe liver disease; * Subject with known severe osteoporosis; * Subject with multiple sclerosis and/or acromegaly; * Subject follows radiotherapy; * Subject with psychiatric disorders or under substance abuse (drug or alcohol); * Subject who participates in other clinical trials interfering with the present protocol; * Mucosal diseases in the areas to be treated.

Locations (5)

Clinique de la Source DentalMe

Louvain-la-Neuve, Brabant Wallon, Belgium

RECRUITING

Cabinet Debaty-Techy

Aubel, Liège, Belgium

RECRUITING

Clinique du Faubourg DentalMe

Chaudfontaine, Liège, Belgium

RECRUITING

Outcomes

Primary Outcomes

Bone reconstruction as measured by CBCT (in mm) after bone grafting procedure.

Bone thickness will be measured using CBCT scan 4 months after the bone augmentation procedure and just before implant insertion. The most apical point from the extraction socket defined at baseline will be set as a reference. The vertical reference line will be drawn in the center of the extraction socket crossing the apical reference point. The horizontal reference line is drawn perpendicular to the vertical line crossing the apical reference point. Based on these marks, 3 measurements will be done at 1, 3 and 5 mm from the top of the crest.

Time frame: one year

Secondary Outcomes

Assessment of the bone density at implant placement.

Assessment of the bone density on the first and second half of the defect at implant placement using a Likert scale at implant placement. Likert scale: 1. = soft bone 2. = medium bone 3. = hard bone

Time frame: one year

Evaluation of the implant primary stability.

Implants primary stability determined by using the torque wrench at implant placement.

Time frame: one year

Assessment of the implant osteointegration after implant placement

Taping of the implant and a rotation test will be performed. A torque wrench will be used at 10Ncm for the rotation test.

Time frame: 15 months

Implant survival rate and success evaluated at 3-, 6- and 12-months and 3- and 5- To evaluate implant survival and success 3-, 6- and 12- months and 3- and 5-years after implant placement

At 3-, 6- and 12-months and 3- and 5-years after implant placement, implant survival will be assessed by answering if: 1. The implant remains in the jaw. 2. The implant is damaged to the extent that it cannot be restored. The success of the implant will be assessed with the criteria from Buser et al.: * Absence of persistent subjective complaints such as pain, foreign body sensation and/or dysesthesia * Absence of a peri-implant infection with suppuration * Absence of mobility * Absence of a continuous radiolucency around the implant

Central Contacts

Emilie Dory, CEO

CONTACT

+32484706172 emilie.dory@wishbone-biotech.com

Justine Pirson, R&D Manager

CONTACT

+3249487202 justine.pirson@wishbone-biotech.com

Data from ClinicalTrials.gov

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