Not yet recruitingNCT07892716Updated Oct 23, 2026

Comparison Between Neutral Zone and Admixed Impression Techniques for Atrophic Mandibular Ridges

An interventional study of Neutral zone impression technique and Admixed impression technique in Atrophic Mandibular Ridge in Edentulous Patients, sponsored by Watim Medical & Dental College. Not yet recruiting. Open to participants aged 50 Years to 70 Years. Per ClinicalTrials.gov, last updated 2026-10-23.

Sponsored by Watim Medical & Dental College · Not applicable, Interventional, and Treatment

Updated Oct 23, 2026Newly registeredGo to Updates ↓

Phase: Not applicable
Study type: Interventional
Enrollment: 60
Allocation: Randomized
Ages: 50 Years to 70 Years
Sex: All

Study summary

This study aims to compare two impression techniques, the neutral zone technique and the admixed impression technique, for making complete dentures in patients with atrophic mandibular ridges (severely resorbed lower jaw ridges). A total of 60 patients aged 50-70 years will be included and divided into two groups of 30 patients each. One group will receive complete dentures made using the neutral zone technique, while the other group will receive complete dentures made using the admixed impression technique. Patient comfort during impression making will be assessed and compared between the two techniques to determine which technique provides greater comfort for patients with atrophic mandibular ridges.

Conditions studied

Atrophic Mandibular Ridge in Edentulous Patients

Keywords

neutral zone technique
admixed impression technique
atrophic manibular ridge
complete denture
patient comfort
edentulous mandible

In context

Lead sponsor

Watim Medical & Dental College is the lead sponsor of 12 studies on the registry; 9 are open to participants now.

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

Who can participate

Ages eligible: 50 Years to 70 Years
Sexes eligible: All
Accepts healthy volunteers: No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

Patients aged 50 to 70 years Completely edentulous in lower jaw Atrophic mandibular ridge as per operational definition Patients coming for new complete denture or havin ill fitting denture

Exclusion criteria

Exclusion Criteria:

History of trauma or surgery history of neuromuscular disorders affecting tongue,lips or cheeks history of oral infections or untreated oral lesions history of systemic conditions where denture impression is not advised history of suitabilty for implant supported prosthesis history of poor cooperation or unable to follow dentists instruction during impression

Study design

Phase: Not applicable
Primary purpose: Treatment
Allocation: Randomized
Intervention model: Parallel assignment
Masking: None (open label)
Enrollment: 60 participants (estimated)

Study arms

Experimental
Neutral zone technique
Paients will undergo mandibular impression making using neutral zone technique for the management of atrophic mandibular ridges.Patient comfort during the impression procedure will be assessed using a structured four item questionnaire
Procedure: Neutral zone impression technique
Active comparator
Admixed impression technique
Patients will undergo mandibular impression making using the admixed impression technique for management of atrophic mandiular ridges.Patient comfort during the impression will be assessed using same structure four item questionnaire.
Procedure: Admixed impression technique

Interventions

ProcedureNeutral zone impression technique
A denture impressin technique used for fabrication of mandibular complete dentures in patients with atrophic mandibular ridges.The technique records the neutral zone to guide denture tooth arrangement and polished surface.
ProcedureAdmixed impression technique
admixed impression technique for fabrication of complete denture in atrophic mandibular ridges

What researchers measure

Primary outcomes

Mean total patient comfort score during impression making
Patient comfort during the impression procedure will be assessed using a structured four item questionnaire evaluating difficulty in tongue movements,irritation during impression,difficulty in following the dentists instructions and duration of the impression procedure.Each item will be scored on a 5 point likert scale and the four scores will be summed to obtain total comfort score ranging from 4 to 20.Higher scores indicate greater patient comfort.The mean total comfort scores will be compared between neutral zone and admixed impression teachnique groups.
Time frame: Immediately after completion of the impression procedure

Study locations

No study locations are listed for this record.

References and documents

Publications

Raja IM, Hosein M, Khan MA. Comparison between the neutral zone and admixed impression techniques in the management of atrophic mandibular ridges. Med Forum. 2022;33(2):109-113.

Individual participant data

Plan to share: No — Individual participants level data will not be shared with other researchers.Study findings will be reported in aggregate form whilw maintaining the confidentiality and privacy of participants.

Timeline

1 registry update since Sep 25, 2026

ElapsedEstimatedEstimated, not yet reached

Start is estimated for Sep 2027; primary completion for Dec 2027, 3 months later.

How these figures are worked out, and which studies are left out of them.

Registered: Oct 18, 2026
First posted: Oct 23, 2026
StartEst.: Sep 2027
Primary completionEst.: Dec 2027
CompletionEst.: Mar 2028
Last update: Oct 23, 2026

What these dates mean

Start.: When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.: When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.: When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.: Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.

Registered

First appeared on the registry. No changes since

Oct 23, 2026

Show all 1 update

Oct 23, 2026
First appeared on the registry

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

Registry details

Key details

Study ID: NCT07892716
Lead sponsor: Watim Medical & Dental College
Responsible party: Seema Kazim (Post graduate resident in prosthodontics, Watim Medical & Dental College) — Principal investigator
First posted: Oct 23, 2026
Start date: Sep 2027 (estimated)
Primary completion: Dec 2027 (estimated)
Completion: Mar 2028 (estimated)
Last update: Oct 23, 2026

Study contacts

Seema kazim, BDS

Contact

skazim952@gmail.com

0092 3435562364

Oversight

Data monitoring committee: No
FDA-regulated drug: No
FDA-regulated device: No

View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.

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Discussion

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