Efficacy of Socket Grafting for Alveolar Ridge Preservation

Efficacy of Socket Grafting for Alveolar Ridge Preservation: A Randomized Controlled Trial

The purpose of this study is to clinically and radiographically assess whether the use of a ridge preservation technique significantly minimizes alveolar ridge resorption following tooth extraction.

Study Overview

• Status: Completed
• Conditions: Atrophy of Edentulous Alveolar Ridge
• Intervention / Treatment: Procedure: Tooth extraction and grafting with allograft; Procedure: Tooth extraction

Detailed Description

Subjects requiring single-rooted tooth extractions and future tooth replacement therapy with implant-supported restorations will be recruited. Subjects will be randomly assigned to either a control (tooth extraction alone) or an experimental group (tooth extraction and ridge preservation using an allograft to fill the alveolar socket covered with a non-absorbable, dense polytetrafluoroethylene membrane [dPTFE]). Clinical linear measurements of the ridge (horizontal and vertical) will be obtained using a tooth-supported stent. Following extraction, primary closure of the socket will not be attempted. Subjects will be re-evaluated at 1 and 4 weeks. Implant placement surgery will be performed at 16 weeks. Clinical measurements will be repeated upon surgical re-entry. Cone beam computed tomographic (CBCT) scans will be obtained at baseline (after tooth extraction) and at 14 weeks (prior to implant placement) to assess alveolar ridge volumetric changes (primary outcome). Secondary outcome measures include changes in bucco-lingual and apico-coronal clinical measurements of the ridge and changes in modified wound healing index changes overtime. The influence of the thickness of the facial and lingual bone of the alveolar ridge and the width of the keratinized tissue on the remodeling of the ridge will be evaluated.

• Study Type: Interventional
• Enrollment (Actual): 59
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United States
  • Iowa
    • Iowa City, Iowa, United States, 52242
      • University of Iowa College of Dentistry - Craniofacial Clinical Research Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 75 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Age: 18 to 75 years.
• Gender: No restriction.
• Subjects must require a single-rooted tooth extraction (Tooth deemed as periodontally and/or restoratively hopeless), except lower incisors and second premolars.
• Subjects must be able and willing to follow instructions related to the study procedures.
• Subjects must have read, understood and signed an informed consent form.

Exclusion Criteria:

• Reported allergy or hypersensitivity to any of the products to be used in the study.
• Severe hematologic disorders, such as hemophilia or leukemia.
• Active severe infectious diseases that may compromise normal healing.
• Liver or kidney dysfunction/failure.
• Currently under cancer treatment or within 18 months from completion of radio- or chemotherapy.
• Subjects who have a long-term history of oral bisphosphonate use (i.e. 10 years or more).
• Subjects with a history of IV bisphosphonates.
• Subjects with uncontrolled diabetes.
• Subjects with severe metabolic bone diseases, such as Paget's disease of bone, will be excluded.
• Pregnant women or nursing mothers.
• Smokers: Subjects who have smoked within 6 months of study onset.
• Concomitant medications: Subjects on concomitant drug therapy for systemic conditions that may affect the outcomes of the study will not be included in the study.

NOTE: Occasional, short-term use (7-14 days) of analgesics or common cold medications is permitted. Use of such medications will be reviewed and recorded by the investigator.

- Any other non-specified reason that from the point of views of the investigators will make a candidate not a suitable subject for the study (e.g. limited mouth opening).

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Tooth extraction and grafting; Tooth extraction and grafting with allograft	Procedure: Tooth extraction and grafting with allograft; Alveolar ridge preservation using a bone grafting material (allograft) and a synthetic dPTFE (dense Polytetrafluoroethylene) barrier membrane; Other Names: Alveolar socket grafting
Sham Comparator: Tooth extraction	Procedure: Tooth extraction; Minimally traumatic single-rooted tooth extraction

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Alveolar Ridge Volumetric Changes	3D reconstructions using radiographic data obtained at baseline and at 14 weeks after the intervention was utilized to calculate the reduction of bone volume that took place during the healing period in both groups	Baseline to Week 14 after tooth extraction

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Changes in Bucco-lingual Ridge Dimension	Linear ridge width change at the bone crest	Baseline to Week 14 after tooth extraction
Changes in Apico-coronal Ridge Dimension	Linear ridge height change at the mid-facial aspect of the ridge	Week 14 after tooth extraction

Collaborators and Investigators

• Sponsor: University of Iowa
• Collaborators: Osteogenics Biomedical
• Investigators: Principal Investigator: Gustavo Avila-Ortiz, DDS, MS, PhD, UI College of Dentistry

Publications and helpful links

General Publications

• Avila-Ortiz G, Gubler M, Romero-Bustillos M, Nicholas CL, Zimmerman MB, Barwacz CA. Efficacy of Alveolar Ridge Preservation: A Randomized Controlled Trial. J Dent Res. 2020 Apr;99(4):402-409. doi: 10.1177/0022034520905660. Epub 2020 Feb 12.

Study record dates

Study Major Dates

• Study Start: March 1, 2013
• Primary Completion (Actual): October 1, 2014
• Study Completion (Actual): October 1, 2014

Study Registration Dates

• First Submitted: January 22, 2013
• First Submitted That Met QC Criteria: February 19, 2013
• First Posted (Estimate): February 20, 2013

Study Record Updates

• Last Update Posted (Actual): August 17, 2017
• Last Update Submitted That Met QC Criteria: July 8, 2017
• Last Verified: July 1, 2017

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pathological Conditions, Anatomical; Atrophy
• Other Study ID Numbers: 201301766