Tooth Extraction
Conditions
Keywords
Wound healing, Vital bone, Mineralized freeze-dried bone allograft (FDBA), Demineralized freeze-dried bone allograft (DFDBA), Ridge preservation
Brief summary
After the removal of a tooth, a bone graft is often placed in the socket to try to keep the volume of bone that was there when the tooth was present so that the bone does not shrink. The bone graft is sometimes kept in place with a small piece of material over the top of the tooth socket and with stitches. This procedure is called Ridge Preservation. Many different materials are used for ridge preservation including bone allografts (bone grafts derived from a human tissue donor), bone xenografts (bone grafts derived from species other than humans, such as cows and pigs), and synthetic materials that are similar in structure to bone (such as calcium apatite). The bone allograft and the calcium apatite product used in this study are Food and Drug Administration (FDA) approved. This study will compare the two methods used to see how much new bone formation there is inside the tooth socket at about 16 weeks of healing after ridge preservation with a calcium apatite/collagen sponge versus an allograft.
Detailed description
At the end of this study the researchers hope to learn the following: How much new bone formation occurs inside the tooth socket at approximately 16 weeks of healing after ridge preservation with calcium apatite/collagen versus allograft. This will be done by examining the bone retrieved from the implant site during the placement of the implant at study visit #5. This bone is normally removed during the drilling of the implant site and discarded as part of standard care. As part of this study, the bone specimen will be removed as normal but will not be discarded; instead, it will be analyzed for the purpose of this research study. At the end of this study the researchers hope to learn the following: How much new bone formation occurs inside the tooth socket at approximately 16 weeks of healing after ridge preservation with calcium apatite/collagen versus allograft. The study team will do this by examining the bone retrieved from the implant site during the placement of the implant at study visit #5. This bone is normally removed during the drilling of the implant site and discarded as part of standard care. As part of this study, the bone specimen will be removed as normal but will not be discarded; instead, it will be analyzed for the purpose of this research study.
Interventions
DEVICECombination 70% FDBA and 30% DFDBA
A combination freeze-dried bone allograft consisting of 70% mineralized FDBA and 30% demineralized FDBA
DEVICEOsteoGen Plug
A synthetic calcium apatite material combined with Type 1 bovine collagen (in a sponge-like product)
Sponsors
The University of Texas Health Science Center at San Antonio
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
DOUBLE (Subject, Outcomes Assessor)
Masking description
Patients will be blind to the material used for their bone graft. Histomorphometric examiners will be blinded when the bone cores are evaluated for % vital bone, % residual graft and % CT/other.
Intervention model description
Single-study-site parallel-arm randomized controlled clinical trial
Eligibility
Sex/Gender
ALL
Age
18 Years to 89 Years
Healthy volunteers
Yes
Inclusion criteria
* Male or female patient aged 18 to 89 * One tooth, excluding molars, that has been identified by dental faculty as requiring a single tooth extraction * A dental implant is indicated and treatment planned to replace the missing tooth * Site has adequate restorative space for a dental implant-retained restoration * Site has at least 10mm of alveolar bone height, without impinging on the maxillary sinus or inferior alveolar canal. * Site has a dehiscence of the buccal or lingual bony plate of the tooth socket extending no more than 50% of the total depth of the socket. * Female patients who have undergone a hysterectomy, tubal ligation, or menopause, and nonpregnant women of child-bearing potential. * Patients are nonsmokers or former smokers. Current smokers may be included if they smoke \<10 cigarettes per day (less than or equal to 10 cigarettes per day)
Exclusion criteria
* Patient allergic to bovine-derived collagen products, Bacitracin, Gentamicin, Polymyxin * Patients who will not cooperate with the follow-up schedule. * Patients will not be entered who are mentally incompetent, prisoners, or pregnant. * Pregnant women or women intending to become pregnant during the study period (as confirmed verbally; an over-the-counter pregnancy test will be provided if pregnancy status is unknown or suspected). * Patients who become pregnant during the study will be withdrawn and standard care will be delivered. * Smokers who smoke \>10 cigarettes per day (more than 10 cigarettes per day)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Percentage of Vital Bone formation | 16 weeks | Bone cores will be evaluated histomorphometrically for the primary outcome: % vital bone formation |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Percentage of Residual Graft Material | 16 weeks | Determine percentage of residual graft remaining at time of implant placement |
| Percentage of CT/other | 16 weeks | Determine the percentage of residual graft and connective tissue or other tissue at the time of implant placement |
Countries
United States
Contacts
Primary ContactBrian Mealey, DDS, MS
Outcome results
None listed