CClinicalTrials.gg
CompletedNCT03866031Updated Feb 9, 2023

Comparative Study of Mandibular Dentures Immediately Loaded on Implants or Mini-implants

An interventional study of implant-supported mandibular overdenture in Problem With Dentures, sponsored by Damascus University. Completed at 1 site in Syrian Arab Republic. Open to participants aged 25 Years to 70 Years. Per ClinicalTrials.gov, last updated 2023-02-09.

Sponsored by Damascus University · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
36
Allocation
Randomized
Ages
25 Years to 70 Years
Sex
All
01

Study summary

3 groups of immediately Loaded implant-supported overdenture patients will be evaluated (overdentures supported by two standard-sized implant, overdentures supported by 4 mini implant d: 3.2 mm ,overdentures supported by 4 mini implant d: 2.75 mm) regarding stability, masticatory efficiency, patient's satisfaction, oral health related quality of life, Peri-implant crestal alveolar bone loss.

Read the detailed description

The implant-supported overdentures will be placed in immediate functional loading on the same day of implants placement. A direct restorative protocol will be applied to modify the existing prosthesis to implant-supported overdentures.

The evaluations of the primary outcomes will be conducted before implantation and after (1 - 3 - 6 - 12 - 18), except Peri-implant crestal alveolar bone loss will be conducted only after (0 - 3 - 6 - 12 - 18).

02

Conditions studied

  • Problem With Dentures

Keywords

  • Implant, overdenture, Immediate loading
03

In context

Lead sponsor

Damascus University is the lead sponsor of 206 studies on the registry; 10 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
25 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. the patient should be completely edentulous for at least 6 months.
  2. first class jaw relation.
  3. adequate bone for an implant length of at least 10 mm and diameter of at least 2.75 mm.
  4. the patients should be able to speak and write in arabic.

Exclusion criteria

Exclusion Criteria:

  1. patients who received radiotherapy to the head or neck region for tumors. (2) a history of chemotherapy. (3) patients on long-term steroids, or bisphosphonates. (4) heavy smokers. (5) patients with physical and mental dis -abilities that interfere with the maintenance of implants.

(6) uncontrolled systematic disease that could compromise implant surgery. (7) extreme bruxism. (8) infectious disease. (9) temporomandibular joint dysfunction.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
36 participants (actual)

Study arms

  • Experimental
    M:2.75

    12 Patients will be provided with 4 mini implant-supported mandibular overdentures d: 2.75 mm

    Other: implant-supported mandibular overdenture

  • Experimental
    M3.25

    12 Patients will be provided with 4 mini implant-supported mandibular overdentures d: 3.25 mm

    Other: implant-supported mandibular overdenture

  • Experimental
    S3.75

    12 Patients will be provided with 2 standard sized implant-supported mandibular overdentures d: 3.75 mm

    Other: implant-supported mandibular overdenture

Interventions

  • Otherimplant-supported mandibular overdenture

    The implant-supported overdentures will be placed in immediate functional loading on the same day of implants placement. A direct restorative protocol will be applied to modify the existing prosthesis to implant-supported overdentures.

06

What researchers measure

Primary outcomes

  1. change in denture stability

    The evaluation will be by Digital force gauge, a Hook of orthodontic wire (18 gauge diameter) will attach to the labial flange of overdenture, the other end of wire will connect to the force gauge which will be pull vertically upward until denture retention lost, and then reading will record 3 times and means value will calculate.

    Time frame: T1: before implantation; T2: 1 month after loaded; T3: 3 month after loaded; T4: 6 month after loaded; T5:12 month after loaded

  2. change in masticatory efficiency

    The evaluation will be by test food filtering device,Where the subjects will chew a measured portion of test food (peanuts) for 20 strokes. The test food will strain through mesh sieve (2 mm opening). The volume of food remaining on the sieve and that passing through the sieve determined the masticatory performance.

    Time frame: T1: before implantation; T2: 1 month after loaded; T3: 3 month after loaded; T4: 6 month after loaded; T5:12 month after loaded

  3. change in patient's satisfaction

    The evaluation will be by 100 mm Visual Analog Scale (VAS), for which higher scores indicate greater satisfaction, They will be asked to rate their level of comfort, ability to chew, stability, ability to speak, ease of cleaning their prostheses and their general satisfaction.

    Time frame: T1: before implantation; T2: 1 month after loaded; T3: 3 month after loaded; T4: 6 month after loaded; T5:12 month after loaded

  4. change in oral health related quality of life

    The evaluation will be by oral health impact profile of edentulous (Ohip-Edent) instrument, Patients will answer questions of ohip-edent which included 7 domains: functional limitation, physical pain, psychological discomfort, physical disability, Psychological disability, Social disability, Handicap. Responses will made on a five-grade Likert-type scale: 0=never ; 1=hardly ever ; 2=occasionally ; 3= fairly often ; 4= very often. disability, social disability and handicap

    Time frame: T1: before implantation; T2: 1 month after loaded; T3: 3 month after loaded; T4: 6 month after loaded; T5:12 month after loaded

  5. change in Peri-implant crestal alveolar bone loss

    The evaluation will be by panoramic radiogram, Peri-implant vertical and horizontal alveolar bone loss will measure (in mm) at the mesial and distal surface of each implant. implant

    Time frame: T1: on same day of loaded; T2: 3 month after loaded; T3: 6 month after loaded; T4:12 month after loaded

07

Study locations

1 site
  • Removable prosthodontics department and implantation department / Faculty of dental medicine / Damascus univ
    Damascus, Syrian Arab Republic
08

References and documents

Publications

  • Zygogiannis K, Aartman IH, Parsa A, Tahmaseb A, Wismeijer D. Implant Mandibular Overdentures Retained by Immediately Loaded Implants: A 1-Year Randomized Trial Comparing the Clinical and Radiographic Outcomes Between Mini Dental Implants and Standard-Sized Implants. Int J Oral Maxillofac Implants. 2017 Nov/Dec;32(6):1377-1388. doi: 10.11607/jomi.5981. PubMed 29140382 ↗
  • Kanazawa M, Tanoue M, Miyayasu A, Takeshita S, Sato D, Asami M, Lam TV, Thu KM, Oda K, Komagamine Y, Minakuchi S, Feine J. The patient general satisfaction of mandibular single-implant overdentures and conventional complete dentures: Study protocol for a randomized crossover trial. Medicine (Baltimore). 2018 May;97(20):e10721. doi: 10.1097/MD.0000000000010721. PubMed 29768340 ↗
  • ALHarthi SS, BinShabaib MS, Ahmed HB, Mehmood A, Khan J, Javed F. Comparison of peri-implant clinical and radiographic inflammatory parameters among cigarette and waterpipe (narghile) smokers and never-smokers. J Periodontol. 2018 Feb;89(2):213-218. doi: 10.1902/jop.2017.170358. PubMed 28777038 ↗
  • Kappel S, Giannakopoulos NN, Eberhard L, Rammelsberg P, Eiffler C. Immediate Loading of Dental Implants in Edentulous Mandibles by Use of Locator(R) Attachments or Dolder(R) Bars: Two-Year Results from a Prospective Randomized Clinical Study. Clin Implant Dent Relat Res. 2016 Aug;18(4):752-61. doi: 10.1111/cid.12349. Epub 2015 May 7. PubMed 25950679 ↗
  • Kroll P, Hou L, Radaideh H, Sharifi N, Han PP, Mulligan R, Enciso R. Oral Health-Related Outcomes in Edentulous Patients Treated With Mandibular Implant-Retained Dentures Versus Complete Dentures: Systematic Review With Meta-Analyses. J Oral Implantol. 2018 Aug;44(4):313-324. doi: 10.1563/aaid-joi-D-17-00210. Epub 2018 Feb 19. PubMed 29457932 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 9, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03866031
Lead sponsor
Damascus University
Responsible party
Sponsor
First posted
Mar 7, 2019
Start date
Apr 3, 2019
Primary completion
Jun 20, 2021
Completion
Dec 12, 2022
Last update
Feb 9, 2023

Study contacts

Heba M Moftah, DDS MSc
principal investigator · PhD student at Removable Prosthodontics Department, faculty of dental medicine, Damascus Univ
Mohannad H Al-saadi, DDS MSc PhD
study director · Professor of Removable Prosthodontics, faculty of dental medicine, Damascus Univ
Khaldoun A Darwich, DDS Msc PhD
study director · Professor of Oral and Maxillofacial surgery, faculty of dental medicine, Damascus Univ

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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