Impact of CAD-CAM designed telescopic crown retainers

Impact of CAD-CAM designed telescopic crown retainers versus conventional clasps on the Quality of Life and Muscle Activity for Patients Restored by Mandibular distal extension removable partial dentures

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

PACTR

Registry ID

PACTR201701001214873

Enrollment

Registered

2015-07-23

Start date

2015-07-24

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

Mandibular distal extension removable partial dentures

Interventions

RPOD retained by Telescopic crowns designed by CAD CAM system

RPOD retained by conventional clasp designed with CAD CAM system

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1- Age 45-65 years. With mean age of 55 years 2- Partially edentulous mandible with remaining first premolars and six anterior teeth with healthy periodontal condition and good oral hygiene. 3- All abutments will be had adequate amount of bone support. 4-Residual alveolar ridges will be of suitable height, covered with healthy, relatively moderate thickness and firm mucosa. 5- Normal maxillomandibular relation. 6- Sufficient inter-arch space especially the posterior region, this will be verified by recording a tentative jaw relation. 7- the time lapsed from last extraction is at least one year. 8- No neurological disorders. 9- Be physically and psychologically able to tolerate procedures. 10- Be cooperative to return for follow-up, examinations and evaluation

Exclusion criteria

Exclusion criteria: 1. Patients with poor oral hygiene and motivation. Because poor oral hygiene can cause inflammation which induce pain that effect OHIP questionnaire outcome. 2.Patients with systemic disease such as endocrine and metabolic diseases (ex: Diabetes Mellitus). Because these diseases increase bone resorption which affect the periodontal support of abutments. 3.Patients will be also free of tempro-mandibular disorders (TMD). Because TMD patients characterize by asymmetrical jaw movements which resulting in altered masticatory dynamics that is responsible for electromyograph misleading readings. 4. Psychiatric problems or unrealistic expectations. Because they cannot able to tolerate procedures.

Design outcomes

Primary

Measure	Time frame
Oral Health Related Quality of Life	—

Secondary

Measure	Time frame
muscle ativity	—

Countries

Egypt

Contacts

Public ContactRadhwan Saleh Algabri

PhD researchers coordinator

radalgabri@yahoo.com00201157889674

Outcome results

None listed

Source: PACTR (via WHO ICTRP) · Data processed: Aug 9, 2026