Association of Force Distribution and Bone Resorption

Association of Occlusal Force Distribution and Bone Resorption in Implant Supported Overdentures

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03026894

Enrollment

Registered

2017-01-20

Start date

2015-11-30

Completion date

2016-09-30

Last updated

2017-01-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bone Resorption

Brief summary

To investigate the residual ridge resorption at anterior and posterior maxillary and posterior mandibular ridges among conventional complete dentures and implant overdenture wearers, and determine its association with the relative occlusal forces distribution, treatment groups and other patient variables.

Detailed description

A total of forty-six edentulous patients participated in this clinical study divided into two groups as following; complete denture group (CD) consists of 23 patients wearing conventional complete dentures and another Implant overdenture group (IOD) consists of 23 patients wearing mandibular complete overdenture with 2 implants. Two panoramic radiographs at baseline and in a follow-up to 7 years were used to measure the ratio of bone changes between the anatomical bone area and the reference area in the maxillary and the mandibular ridges. The occlusal contacts percentage of force in maximum intercuspation anteriorly and posteriorly were recorded for both groups by using T-Scan III system. Oral and written information in English or Malay language, regarding the study, was provided and written consent obtained before enrolment.

Interventions

RADIATIONPanoramic Radiograph

Measurement of bone resorption

DEVICET-Scan III occlusal system

Recording percentage of force in maximum intercuspation

Study design

Allocation

NON_RANDOMIZED

Intervention model

PARALLEL

Primary purpose

BASIC_SCIENCE

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

49 Years to 89 Years

Healthy volunteers

Yes

Inclusion criteria

* Patients wearing mandibular IODs opposing conventional maxillary CDs. * Patients wearing conventional maxillary and mandibular CDs. * Clearly visible anatomic landmarks of the panoramic radiography image.

Exclusion criteria

* Patients with a history of temporomandibular joint dysfunction.

Design outcomes

Primary

Measure	Time frame	Description
Residual ridge resorption	7 years	To estimate residual ridge resorption in patients wearing implant overdentures and complete dentures using area index radiography method.

Secondary

Measure	Time frame	Description
Occlusal force distribution	1 year	To measure the percentage of occlusal force distribution in patients wearing implant overdentures and complete dentures using T-scan III occlusal analysis device.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026