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Ridge Preservation Following Tooth Extraction Using Two Mineralized Cancellous Bone Allografts

Primary Purpose

Alveolar Bone Loss

Status
Completed
Phase
Not Applicable
Locations
United States
Study Type
Interventional
Intervention
PUROS (Ridge Preservation bone grafting surgery)
FDBA (Ridge Preservation bone grafting surgery)
Sponsored by
The University of Texas Health Science Center at San Antonio
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Alveolar Bone Loss

Eligibility Criteria

18 Years - 89 Years (Adult, Older Adult)All SexesAccepts Healthy Volunteers

Inclusion Criteria:Patients will be included in this study if they qualify the following inclusion criteria:

  • Live within 50 miles from the School of Dentistry, University of Texas Health Science Center at San Antonio
  • Are able to attend a minimum of 6 visits over a 4-5 month period, as required by the study protocol
  • A single rooted tooth that has been identified as requiring extraction
  • Desire a dental implant to replace the missing tooth
  • Have adequate restorative space for a dental implant-retained restoration
  • Have at least 10mm of alveolar bone height, without impinging on the maxillary sinus or inferior alveolar canal.
  • Have 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 non-pregnant women of child-bearing potential.
  • Are nonsmokers or former smokers. Current smokers may only be included if they smoke <10 cigarettes per day

Exclusion Criteria:

  • Patients who live more than 50 miles from the School of Dentistry, University of Texas Health Science Center at San Antonio
  • Patients who do not meet all the inclusion criteria or who will not cooperate with the required follow-up schedule.
  • Patients will are mentally incompetent, prisoners, or pregnant.
  • Pregnant women or women intending to become pregnant during the study period.
  • Smokers who smoke >10 cigarettes per day
  • Clinical and/or radiographic determinations which will preclude inclusion in this study are: Active infection other than periodontitis; Inadequate bone dimensions or restorative space for a dental implant; Presence of a disease entity, condition or therapeutic regimen which decreases probability of soft tissue and bony healing, e.g., poorly controlled diabetes, chemotherapeutic and immunosuppressive agents, autoimmune diseases, history of bisphosphonate use or long-term steroid therapy; Positive medical history of endocarditis following oral or dental surgery.
  • Sensitivity or allergy to Bacitracin, Gentamicin, Polymyxin B Sulfate, alcohol and/or surfactants

Sites / Locations

  • UT Health Science Center at San Antonio, School of Dentistry

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Active Comparator

Arm Label

PUROS (Non-Freeze-Dried bone allograft)

FDBA (Freeze-Dried bone allograft)

Arm Description

Ridge preservation bone grafting surgery with Non-Freeze-Dried cancellous bone allograft (PUROS)

Ridge preservation bone grafting surgery with Freeze-Dried cancellous bone allograft (FDBA)

Outcomes

Primary Outcome Measures

% Vital Bone Formation (Histological)
histologic determination of % of vital bone formation

Secondary Outcome Measures

% Residual Graft Material (Histological)
histologic determination of % of residual bone graft material

Full Information

First Posted
July 31, 2015
Last Updated
December 18, 2017
Sponsor
The University of Texas Health Science Center at San Antonio
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1. Study Identification

Unique Protocol Identification Number
NCT02515058
Brief Title
Ridge Preservation Following Tooth Extraction Using Two Mineralized Cancellous Bone Allografts
Official Title
Ridge Preservation Following Tooth Extraction Using Mineralized Freeze-Dried Bone Allograft Compared to PUROS Mineralized Bone Allograft
Study Type
Interventional

2. Study Status

Record Verification Date
November 2017
Overall Recruitment Status
Completed
Study Start Date
September 2015 (undefined)
Primary Completion Date
September 2017 (Actual)
Study Completion Date
September 2017 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
The University of Texas Health Science Center at San Antonio

4. Oversight

Data Monitoring Committee
No

5. Study Description

Brief Summary
The study is a 2-arm, parallel-design, randomized, prospective clinical trial designed to examine histologic wound healing following ridge preservation using bone allograft that has been prepared by either freeze-drying or via a non-freeze-dried solvent process.This entire protocol involves procedures that are standard care. All materials are FDA-approved materials being used in an FDA-approved manner. The test group subjects will have extraction sockets grafted with a cancellous non-freeze-dried bone allograft (called PUROS graft). This test group will be compared to an active control group using cancellous freeze-dried bone allograft (called FDBA). The null hypothesis is that there will be no significant difference in formation of new vital bone between treatment groups (primary outcome). Each subject will provide a single non-molar tooth site for study treatment. After tooth extraction, the graft material will be placed and covered by a resorbable collagen membrane. Following 3 months of healing, the dental implant will be place, at which time a core of bone will be removed from the site as part of the preparation for the implant. The core biopsy will then be evaluated for the primary histologic outcome of % vital bone formation and secondary histologic outcome of % residual graft material.
Detailed Description
The study is designed to examine histologic wound healing following ridge preservation using cancellous bone allograft that has been prepared either by freeze-drying (FDBA) or by a solvent-based processing method (PUROS). This entire protocol involves procedures that are standard care. All materials are FDA-approved materials being used in an FDA-approved manner. The test group subjects will have extraction sockets grafted with a cancellous non-freeze-dried bone allograft (called PUROS graft). This test group will be compared to an active control group using cancellous freeze-dried bone allograft (called FDBA). The null hypothesis is that there will be no significant difference in formation of new vital bone between treatment groups (primary outcome). Each subject will provide a single non-molar tooth site for study treatment. After tooth extraction, the graft material will be placed and covered by a resorbable collagen membrane. Following 3 months of healing, the dental implant will be place, at which time a core of bone will be removed from the site as part of the preparation for the implant. The core biopsy will then be evaluated for the primary histologic outcome of % vital bone formation and secondary histologic outcome of % residual graft material.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Alveolar Bone Loss

7. Study Design

Primary Purpose
Treatment
Study Phase
Not Applicable
Interventional Study Model
Parallel Assignment
Masking
None (Open Label)
Allocation
Randomized
Enrollment
44 (Actual)

8. Arms, Groups, and Interventions

Arm Title
PUROS (Non-Freeze-Dried bone allograft)
Arm Type
Experimental
Arm Description
Ridge preservation bone grafting surgery with Non-Freeze-Dried cancellous bone allograft (PUROS)
Arm Title
FDBA (Freeze-Dried bone allograft)
Arm Type
Active Comparator
Arm Description
Ridge preservation bone grafting surgery with Freeze-Dried cancellous bone allograft (FDBA)
Intervention Type
Device
Intervention Name(s)
PUROS (Ridge Preservation bone grafting surgery)
Intervention Description
Ridge preservation bone grafting after tooth extraction
Intervention Type
Device
Intervention Name(s)
FDBA (Ridge Preservation bone grafting surgery)
Intervention Description
Ridge preservation bone grafting after tooth extraction
Primary Outcome Measure Information:
Title
% Vital Bone Formation (Histological)
Description
histologic determination of % of vital bone formation
Time Frame
3 months after ridge preservation
Secondary Outcome Measure Information:
Title
% Residual Graft Material (Histological)
Description
histologic determination of % of residual bone graft material
Time Frame
3 months after ridge preservation

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
89 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria:Patients will be included in this study if they qualify the following inclusion criteria: Live within 50 miles from the School of Dentistry, University of Texas Health Science Center at San Antonio Are able to attend a minimum of 6 visits over a 4-5 month period, as required by the study protocol A single rooted tooth that has been identified as requiring extraction Desire a dental implant to replace the missing tooth Have adequate restorative space for a dental implant-retained restoration Have at least 10mm of alveolar bone height, without impinging on the maxillary sinus or inferior alveolar canal. Have 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 non-pregnant women of child-bearing potential. Are nonsmokers or former smokers. Current smokers may only be included if they smoke <10 cigarettes per day Exclusion Criteria: Patients who live more than 50 miles from the School of Dentistry, University of Texas Health Science Center at San Antonio Patients who do not meet all the inclusion criteria or who will not cooperate with the required follow-up schedule. Patients will are mentally incompetent, prisoners, or pregnant. Pregnant women or women intending to become pregnant during the study period. Smokers who smoke >10 cigarettes per day Clinical and/or radiographic determinations which will preclude inclusion in this study are: Active infection other than periodontitis; Inadequate bone dimensions or restorative space for a dental implant; Presence of a disease entity, condition or therapeutic regimen which decreases probability of soft tissue and bony healing, e.g., poorly controlled diabetes, chemotherapeutic and immunosuppressive agents, autoimmune diseases, history of bisphosphonate use or long-term steroid therapy; Positive medical history of endocarditis following oral or dental surgery. Sensitivity or allergy to Bacitracin, Gentamicin, Polymyxin B Sulfate, alcohol and/or surfactants
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Brian L. Mealey, DDS, MS
Organizational Affiliation
UT Health Science Center at San Antonio, School of Dentistry
Official's Role
Principal Investigator
Facility Information:
Facility Name
UT Health Science Center at San Antonio, School of Dentistry
City
San Antonio
State/Province
Texas
ZIP/Postal Code
78229
Country
United States

12. IPD Sharing Statement

Citations:
PubMed Identifier
30161278
Citation
Corning PJ, Mealey BL. Ridge preservation following tooth extraction using mineralized freeze-dried bone allograft compared to mineralized solvent-dehydrated bone allograft: A randomized controlled clinical trial. J Periodontol. 2019 Feb;90(2):126-133. doi: 10.1002/JPER.18-0199. Epub 2018 Sep 19.
Results Reference
derived

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Ridge Preservation Following Tooth Extraction Using Two Mineralized Cancellous Bone Allografts

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