Dentures and Dental Implants in Treating Patients Undergoing Surgery for Mouth Cancer

January 29, 2016 updated by: Jonsson Comprehensive Cancer Center

Efficacy of Implant-Supported Maxillofacial Prostheses

RATIONALE: The use of dentures and dental implants may help maintain chewing and speaking ability following surgery to remove tumors in the mouth.

PURPOSE: Phase II trial to study the effectiveness of dentures and dental implants in maintaining the ability to chew and speak in patients undergoing surgery for mouth cancer.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

OBJECTIVES:

  • Determine whether conventional or implant supported dental prostheses and current surgical reconstructive procedures restore oral function and quality of life to pre-cancer surgery levels in patients with early oral cancer.

OUTLINE: Patients complete a series of objective and subjective functional tests, questionnaires, and baseline examinations. Within 1-5 days, patients undergo the composite resection, including reconstructive surgery for the mandibulectomy group. Patients in the maxillectomy group receive an immediate maxillary surgical obturator. Approximately 6 weeks after ablative surgery, some patients receive radiotherapy for 5-7 weeks.

Patients receive 2-4 implants at 12-16 weeks after completion of radiotherapy or 8-16 weeks after ablative surgery. Patients then receive conventional dentures at 4-22 weeks after implant surgery. Implants are exposed during 27-48 weeks after placement and abutments connected for fabricating dental prostheses. Approximately 8 weeks are needed to fabricate the implant supported prosthesis.

Patients complete quality of life and other questionnaires prior to and at 8-21 weeks after surgery, 16 weeks after conventional denture insertion, and then 16 weeks after implant supported prosthesis insertion.

Patients are followed every 6 months for at least 3 years.

PROJECTED ACCRUAL: A total of 62 patients (22 requiring maxillectomy and 40 requiring mandibulectomy) will be accrued for this study within 42 months.

Study Type

Interventional

Enrollment (Actual)

46

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • California
      • Los Angeles, California, United States, 90095-1781
        • Jonsson Comprehensive Cancer Center, UCLA

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

35 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

DISEASE CHARACTERISTICS:

  • Diagnosis of early oral cancer lesions requiring one of the following:

    • Partial or total unilateral maxillectomy OR
    • Partial lateral mandibulectomy with or without partial glossectomy
  • Edentulous or edentulous in the maxillary arch prior to or after ablative surgery (maxillectomy group)
  • Partial mandibulectomy leaving the condyles intact bilaterally (mandibulectomy group)
  • Must have sufficient bone in the selected implant sites to accommodate 2-4 implants of at least 10 mm in length
  • No temporomandibular dysfunction and/or functionally restrictive opening
  • No requirement for total glossectomy, reconstructive maxillary surgery, or maxillary sinus lift
  • No requirement for radiotherapy after mandibular reconstructive surgery

PATIENT CHARACTERISTICS:

Age:

  • 35 to 80

Performance status:

  • Not specified

Life expectancy:

  • Not specified

Hematopoietic:

  • Not specified

Hepatic:

  • Not specified

Renal:

  • Not specified

Other:

  • No oral discomfort that would preclude study
  • No complications after ablative or reconstructive surgery that would preclude dental rehabilitation with implants

PRIOR CONCURRENT THERAPY:

Biologic therapy:

  • Not specified

Chemotherapy:

  • Not specified

Endocrine therapy:

  • Not specified

Radiotherapy:

  • See Disease Characteristics
  • No prior or concurrent radiotherapy of greater than 5,500 cGY to potential implant site

Surgery:

  • See Disease Characteristics

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Supportive Care
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Implant
A total of 62 patients with early oral cancer will be recruited; in addition, 22 patients requiring a partial maxillectomy and 40 requiring a partial lateral mandibulectomy will be enrolled. The mandibular defects will be reconstructed with fibula free flap surgery. Following a healing period, implants will be placed and permitted to heal unloaded for six months. Conventional dental prostheses will be fabricated and used by patients for at least 16 weeks during Phase I healing before the implants are exposed and loaded. A few weeks after Phase II surgery, the patients will receive implant-supported dental prostheses.
Other: Implant
A total of 62 patients with early oral cancer will be recruited; in addition, 22 patients requiring a partial maxillectomy and 40 requiring a partial lateral mandibulectomy will be enrolled. The mandibular defects will be reconstructed with fibula free flap surgery. Following a healing period, implants will be placed and permitted to heal unloaded for six months. Conventional dental prostheses will be fabricated and used by patients for at least 16 weeks during Phase I healing before the implants are exposed and loaded. A few weeks after Phase II surgery, the patients will receive implant-supported dental prostheses.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Jonsson Comprehensive Cancer Center

Investigators

  • Study Chair: Neal R. Garrett, PhD, Jonsson Comprehensive Cancer Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

June 1, 1997

Primary Completion (Actual)

May 1, 2003

Study Completion (Actual)

May 1, 2003

Study Registration Dates

First Submitted

October 4, 2000

First Submitted That Met QC Criteria

May 28, 2003

First Posted (Estimate)

May 29, 2003

Study Record Updates

Last Update Posted (Estimate)

February 2, 2016

Last Update Submitted That Met QC Criteria

January 29, 2016

Last Verified

January 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CDR0000066588
  • UCLA-HSPC-940205413
  • UCLA-DEN-1R01DE11255
  • UCLA-HSPC-940205411
  • NCI-V00-1606

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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