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Using 3.3mm Screw Tap and Cutting Resistance to Evaluate Bone Quality Around Dental Implant

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified February 2005 by National Taiwan University Hospital.
Recruitment status was:  Recruiting
Information provided by:
National Taiwan University Hospital Identifier:
First received: September 12, 2005
Last updated: June 5, 2008
Last verified: February 2005
Osseointegrated root form implants have been applied successfully in treating fully and partially edentulous patients and patients with single tooth missing. However, the success rate of osseointegrated dental implants was not as good in patients with poor bone quality. The reasons are believed that poor bone quality reduces the initial stability of dental implants and then reduces the success rate. For increasing initial stability of dental implants, some technical modifications are suggested in literature. However, due to lack of an objective method to evaluate bone quality, they are controversial. The purposes of this clinical study are to develop a standard procedure which using cutting resistance measured by Osseocare in surgery to evaluate the bone quality and to compare with the clinical experiences of oral surgeons. The objective outcome, initial stability of dental implant, is measured with Osstell. The analyzed results are also helpful for less experienced surgeons.

Jaw, Edentulous, Partially Mouth, Edentulous

Study Type: Observational
Study Design: Time Perspective: Prospective
Official Title: Using 3.3mm Screw Tap to Modify the Standard Implantation Procedure and to Measure the Cutting Resistance for Establishing a More Objective Method to Evaluate the Peri-Implant Bone Quality

Further study details as provided by National Taiwan University Hospital:

Estimated Enrollment: 60
Study Start Date: March 2005
Detailed Description:

Materials & Methods:

1. Patient eligibility: Six implant surgeons will assist the experiment. The subjects are patient who will receive dental implant treatment in Dental department of NTUH. Sixty subjects are offered by six surgeons. They must fully fill the requirements as following


Ages Eligible for Study:   30 Years to 60 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • No major systemic diseases
  • Mouth opening: > 35 mm
  • Missing teeth at anterior or premolar area and willing to restored by implantation

Exclusion Criteria:

  • Uncomfortable or other condition occurring in the surgical procedure make the measuring unacceptable
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00172718

Contact: Tong-Mei Wang, DDS, MS 886-2-23123456 ext 6864

Dept. of Dentistry, National Taiwan University Hospital Recruiting
Taipei, Taiwan, 100
Contact: Tong-Mei Wang, DDS, MS    886-2-23123456 ext 6864   
Sponsors and Collaborators
National Taiwan University Hospital
Principal Investigator: Tong-Mei Wang, DDS, MS National Taiwan University, School of Dentistry
Study Director: Li-Deh Lin, DDS, PhD National Taiwan University, School of Dentistry
  More Information

Additional Information: Identifier: NCT00172718     History of Changes
Other Study ID Numbers: 9361701264
Study First Received: September 12, 2005
Last Updated: June 5, 2008

Additional relevant MeSH terms:
Mouth, Edentulous
Jaw, Edentulous
Jaw, Edentulous, Partially
Mouth Diseases
Stomatognathic Diseases
Tooth Diseases
Jaw Diseases
Musculoskeletal Diseases processed this record on September 21, 2017