Radiographic Assessment of Bone Regeneration in Alveolar Sockets With PLGA Scaffold

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00836797
Recruitment Status : Completed
First Posted : February 4, 2009
Last Update Posted : February 4, 2009
National University Hospital, Singapore
Saveetha University
Information provided by:
Bio-Scaffold International Pte Ltd

Brief Summary:
After extraction of a tooth, the bony socket heals naturally but due to the absent of the tooth and any presence of support in the socket, bone resorption occur both vertically and bucco lingually or bucco palataly. This bony resorption ultimately effects a lot of things like - the support for the adjacent teeth become weak, the shallow ridge makes it difficult for future prosthesis retention, and less bony support for any implant placement in the future which is the most popular and effective way of tooth replacement now a days. So now a days keeping the integrity and contour of the alveolar bony socket is very important for the patients future rehabilitation. The use of scaffold will help to maintain the integrity of the alveolar bony socket thus provides a vital support for the adjacent teeth, preserve the alveolar crest height, maintain the bony contour, helps to prevent bleeding, and most importantly it will help in bone regeneration which is the vital factor for future rehabilitation.

Condition or disease
Preservation of Alveolar Bone Height With PLGA Bioscaffold

Detailed Description:

A case controlled study design is adopted. Patients who will be having extraction of any tooth including surgical extraction but not due to any periodontal reasons are selected. Consent of the patient will be taken for the procedure and all the effects and possibilities will be explained to the patients. Extraction will be done and scaffold material will be placed inside the socket. Sockets with the scaffold will be the variable studied and the sockets without scaffold placed inside the sockets will be the control group. An OPG x ray will be taken with the head position standardized by a positioning device. A second x-ray will be taken following the same technique after two months (for assessment of bone healing as is practiced normally) and a final x-ray will be taken after 3 months of the first x-ray (normally done in clinics for assessment of socket prior to implantation.

The OPG x ray is taken with the patient biting on a bite plate device fabricated with an embedded wire inside which is radiopague. If the distance from the wire line (the occlusal plane) to the alveolar bony height is 'a' and if the actual diameter of the metallic ball is 'b' and radiographic ball diameter is 'c' then the equation ( a×b)/c will give us the distance of the alveolar bony crest from the wire line. The measurements taken will determine if the distance of the alveolar crest from the wire line remained the same or has increased. If it remains the same, it will suggest that the scaffold material had maintained the socket and prevented alveolar bone resorption, but if the distance increases that will indicate vertical loss of alveolar bone and the extent measured can be compared with sockets without the support of an immediate post-extraction scaffold. This study will determine firstly whether the scaffold allows for bone regeneration in human alveolar sockets in the normal time and secondly whether it would help to preserve alveolar bone height as compared to cases without scaffold.

Consent of the selected patient will be taken for the procedure. Extraction will be done and scaffold material will be placed inside the socket. Socket with the scaffold will be our cases and the socket without scaffold will be the control group in multiple extraction cases. Radiographic assessment will be done to assess bone regeneration at the prescribed pre-extraction stage, at the 2 months bone healing stage and at the 3 months (from initial extraction) implant planning stage as in usual clinical practice . Assessment of the bony height is made with the prescribed formula from the radiographs taken and comparison will be made with the control cases. The following are the criteria for selecting the patients.

Study Type : Observational
Actual Enrollment : 33 participants
Observational Model: Case Control
Time Perspective: Prospective
Official Title: Phase I Radiographic Assessment of Bone Regeneration in Alveolar Sockets With PLGA Bioscaffold After Teeth Extraction
Study Start Date : May 2007
Actual Primary Completion Date : September 2007
Actual Study Completion Date : July 2008

1 Case with scaffold
This group of patients will be having a placement of PLGA bioscaffold in the alveolar socket after teeth extraction
2 Control without scaffold
The Alveolar socket will be left to heal and no treatment/scaffold placement will be done

Primary Outcome Measures :
  1. Preservation of Alveolar height [ Time Frame: 3 months ]

Information from the National Library of Medicine

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Ages Eligible for Study:   20 Years to 70 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Probability Sample
Study Population
Dental clinic patients undergoing teeth extraction

Inclusion Criteria:

  1. Under going extraction of tooth including the surgical extraction.
  2. Healthy individual with no known medical problems.
  3. Not allergic to foreign body.
  4. Extractions which are not due to periodontal causes.

Exclusion Criteria:

  1. Bony disease.
  2. Bleeding disorder.
  3. Allergic to foreign body.
  4. Mentally retarded persons.
  5. Diabetic patient.
  6. Drug addict.
  7. Extraction due to periodontal disease.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00836797

Saveetha Dental College, Saveetha University
Chennai, Tamil Nadu, India, 600077
Dental Centre, National University Hospital,
Singapore, Singapore, 119074
Sponsors and Collaborators
Bio-Scaffold International Pte Ltd
National University Hospital, Singapore
Saveetha University
Principal Investigator: Tai Weng Fan Victor, BDS FDSRCS National University of Singapore, Faculty of Dentistry

Responsible Party: Dr. Victor Tai Weng Fan/ Assistant Professor, Faculty of Dentistry, National University of Singapore Identifier: NCT00836797     History of Changes
Other Study ID Numbers: BSI-001-VF
DSRB A/06/404
First Posted: February 4, 2009    Key Record Dates
Last Update Posted: February 4, 2009
Last Verified: February 2009

Keywords provided by Bio-Scaffold International Pte Ltd:
Alveolar Bone Loss
Alveolar ridge
Alveolar Process