Within-subject Comparison of Mandibular Overdentures Retained by 1,2,or 3 Implants

University of Manitoba

Status

Unknown

Conditions

Complete Edentulism

Treatments

Other: Questionnaire

Study type

Interventional

Funder types

Other

Identifiers

NCT01566227

B2012:012

Details and patient eligibility

About

This research is being done to find out the ideal number of implants/attachments required to provide adequate stability of dentures during function.

Full description

The aim of this study is threefold: i) to evaluate within-subject response to complete lower dentures retained by 1 or 2 or 3 implants fitted with independent overdenture attachments; ii) laboratory evaluation of the retention force generated with 1-2 or 3-implants and study its correlation to patients' response; iii) study the wear pattern of the plastic inserts on the overdenture abutments during each retention mode (i.e. the number of implants used to retain the dentures) and correlate its effects to denture stability.

Enrollment

30 estimated patients

Sex

All

Ages

25+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

subjects completely edentulous on maxilla and mandible for at least a year (w/out dentures)
Adult age (25 plus) male or female
Stable medical health
Ability to participate in the study for at least 3-4 years
Able to understand and respond to surveys used in the study
Adequate amount of bone in the mandible to receive 3 implants.

Exclusion criteria

history of drug and alcohol abuse, excessive smoking (more than 1 pack/day)

surgical limitations:
uncontrolled systemic disease: diabetes, etc.. that may compromised healing
irradiated surgical site
inadequate bone height and width (re: implant size)
inability to undergo minor oral surgery because of health or personal reasons
psychological and handicapped conditions that may hinder 4-year involvement (physical handicap conditions)
Severe TMDs related to joint pathology