Healing Dynamics in Human Extraction Sockets Grafted With Bio-Oss Collagen®

Completed · Not applicable

Conditions studied: Tooth Loss

In brief

The purpose of this study is to clinically, radiographically and histologically evaluate the healing sequence of post-extraction sockets grafted with Bio-Oss Collagen® at 3, 6 and 9 months following tooth extraction in single-rooted tooth sites. Subjects with single rooted teeth planned for extraction and replacement with endosseous dental implants will be recruited for the study based on the eligibility criteria and will be divided in three groups (Groups 1, 2 and 3).A cone-beam computed tomography (CBCT) scan will be obtained and reviewed to prepare for the surgical approach and evaluate the ridge dimensions, the tooth planned for extraction as well as the adjacent sites. After tooth extraction, the socket will be grafted with Bio-Oss Collagen® and, depending on the morphology of the extraction sockets, a collagen matrix (Mucograft® seal) and/or a restorable collagen membrane (BioGide®)will be placed to cover and stabilize the graft. Patients will return at 2 and 6 weeks post-extraction to evaluate the healing. A second CBCT will be obtained 2 weeks prior to implant placement to evaluate the ridge dimensions and compare them to the baseline data. Implant placement will take place at 12, 24 and 36 after tooth extraction for Groups 1, 2 and 3 respectively. A bone core biopsy will be obtained at the time of implant placement and will be sent for histological analysis. Patients will return for a post-operative visit at two weeks. Clinical indices (probing depth, recession, bleeding upon probing, keratinized mucosa height, plaque and gingival index), patient reported outcomes and marginal bone levels via standardized periapical radiographs will be evaluated and recorded at baseline (no more than 30 days following delivery of final implant restoration) 1, 2 and 3 years post-loading.

Key facts

Study ID

NCT03659617

Run by

University of Iowa

People needed

39

Starts

2018-12-10

Expected to finish

2025-05-22

Last updated by the study team

2026-03-09

Who can join

Age: 18 and older, up to 95. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• May be either male or female
• Age: 18 years or older
• Subjects with a single-rooted tooth (except mandibular incisors) indicated for extraction
• Extractions socket walls should either be intact or have no more than one bony wall (buccal or lingual) dehiscence extending no more than 50% of the total bony wall height
• Must be in adequate physical and mental health to undergo routine dental treatment including the surgical procedures associated tooth extraction and implant placement
• Subjects' treatment plan must include replacement of the tooth to be extracted with dental implant supported fixed restoration
• Subjects must have read, understood and signed an informed consent form

You may not qualify if…

• Mandibular incisors
• Acute infection associated with the tooth to be extracted or with adjacent teeth
• History of significant heart, stomach, liver, kidney, blood, immune system disease, or other organ impairment or systemic diseases that would prevent undergoing the proposed treatment or may result in compromised healing (e.g. poorly controlled diabetes, active heavy tobacco use [>10 cigs/day])
• Subjects with uncontrolled and/or severe metabolic bone diseases or disorders, such as osteoporosis, thyroid disorders or Paget's disease
• Subjects taking any medication or supplement known to largely influence bone metabolism, such as IV bisphosphonates, long-term history of oral bisphosphonates or chronic intake of glucocorticoids
• Pregnant women or nursing mothers
• Subjects that are unwilling or unable to sign the informed consent
• History of lack of compliance with dental visits
• Subjects unwilling to return for the required number of visits

Where it is running

• The University of Iowa College of Dentistry and Dental Clinics — Iowa City, Iowa, United States

Full record on ClinicalTrials.gov

Trial information comes from ClinicalTrials.gov and is refreshed daily. TrialsForMe does not provide medical care and does not run the studies it lists.