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Interventions for Patients With a Shortened Dental Arch (SDA-RCT)

This study is not yet open for participant recruitment. (see Contacts and Locations)
Verified May 2012 by University of the Western Cape
Information provided by (Responsible Party):
Dr Saadika Khan, University of the Western Cape Identifier:
First received: May 9, 2012
Last updated: May 10, 2012
Last verified: May 2012

Dental services for large sectors of the population of the Western Cape (WC) Province of South Africa (SA) has been, and continues to be, limited to low-cost treatment options and emergency services, such as extractions at public health clinics. Replacement of missing teeth for the disadvantaged majority of the population is provided almost exclusively at the dental teaching institutions. Loss of teeth in the WC Province is, as elsewhere, the result of disease and the lack of restorative care and then having these replaced by a removable partial denture, if the patient can afford it Null Hypothesis: The daily functional needs and quality of life of partially dentate adult patients with a classic Shortened Dental Arch (SDA) will not be satisfied nor improved by replacing the molars with a removable prosthesis.

Condition Intervention Phase
Anomaly of Dental Arch
Device: Removable partial denture (Chrome Cobalt Distal)
Other: A classic SDA
Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Outcomes of Interventions for Patients With a Classic Shortened Dental Arch: A Randomized Controlled Trial

Resource links provided by NLM:

Further study details as provided by University of the Western Cape:

Primary Outcome Measures:
  • Patient satisfaction [ Time Frame: 6 Months ] [ Designated as safety issue: No ]

    Two different tools will b used to assess primary outcomes

    1. Oral Indicator Dental Profile (OIDP)
    2. Global Visual Analogue Scale

Secondary Outcome Measures:
  • Success of treatment intervention [ Time Frame: 1 year ] [ Designated as safety issue: No ]
    Failure of intervention or patient unhappy with treatment prescribed

Estimated Enrollment: 2
Study Start Date: October 2012
Estimated Study Completion Date: December 2014
Estimated Primary Completion Date: March 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Removable partial denture Group
Patients with a classic SDA will be randomized into one of 2 Groups Group A will receive a removable partial denture
Device: Removable partial denture (Chrome Cobalt Distal)
For Group A: a distal extension removable denture will be constructed for patients with a classic SDA
Other Name: Chrome Cobalt Distal extension denture for Group A patients
Active Comparator: Shortened Dental Arch Group
Patients with a Classic SDA and not receiving any Intervention will be compared to the removable partial denture group
Other: A classic SDA
For Group B: Patients with a classic SDA will not be provided with a removable denture and will compared to patients in Group A
Other Name: No intervention for Group B patients

Detailed Description:

The aim of this research is to determine whether the daily functional needs and the quality of life of partially dentate adult patients with a classic SDA will be satisfied and improved without having the molars replaced with a removable prosthesis, as compared to having the use of such prosthesis.

Objectives: To conduct a randomized controlled trial amongst partially dentate adult patients with a classic SDA dentition (20 occluding teeth, including all incisors, canines and premolars) and where these patients will be randomly assigned to one of two groups: one group would be provided with a metal- based removable partial denture (RPD) to replace the molars bilaterally, the other will receive no treatment.

Daily functioning ability and patient satisfaction between the groups (with/without RPD) would then be compared.


Ages Eligible for Study:   21 Years to 55 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients with Classic SDA
  • Specific Age limits
  • Remaining teeth periodontally sound
  • Lost molars in one jaw
  • Both canines and one premolar should be present

Exclusion Criteria:

  • Exclude patients with Angle Class 2 or 3
  • Signs of Temporo-mandibular disorders
  • Compliance is a problem (Alcoholism/ drug addiction)
  • Risk of over-eruption of teeth
  • Patients wanting removable partial dentures
  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: NCT01597206

Contact: Saadika Khan, PhD +27 21 937 3006

South Africa
Saadika Khan Not yet recruiting
Cape Town, Western Cape, South Africa, 7800
Contact: Saadika Khan   
Principal Investigator: Saadika Khan         
Sponsors and Collaborators
University of the Western Cape
Principal Investigator: Saadika Khan, PhD Staff Member
  More Information

No publications provided

Responsible Party: Dr Saadika Khan, Dr, University of the Western Cape Identifier: NCT01597206     History of Changes
Other Study ID Numbers: SDA Clinical Trial, SDA South African RCT
Study First Received: May 9, 2012
Last Updated: May 10, 2012
Health Authority: South Africa: Human Research Ethics Committee

Keywords provided by University of the Western Cape:
randomized trial
shortened dental arch
patient satisfaction

Additional relevant MeSH terms:
Tooth Abnormalities
Congenital Abnormalities
Stomatognathic Diseases
Stomatognathic System Abnormalities
Tooth Diseases
Growth Substances
Pharmacologic Actions
Physiological Effects of Drugs
Trace Elements processed this record on November 20, 2014