Computer Guided Placement of Zygomatic Implants in Two Different Approaches

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

11 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-03-04

Study Completion Date

2024-11-01

Brief Summary

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Evaluation of computer guided placement of Zygomatic implants utilizing intra sinus versus extra sinus surgical approach for the reconstruction of atrophic maxilla. The expected benefit from the current study is to select the most suitable approach for Zygomatic implant placement with the least postoperative complications

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Detailed Description

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During the last ten years, there has been an increase in the number of edentulous patients looking for and seeking out rehabilitation. Formerly, individuals with edentulous maxilla and mandibles were rehabilitated with removable complete dentures, but it was associated with poor patients' satisfaction.

Alveolar bone atrophy results from loss of bony support due to the physiological process that naturally takes place after tooth loss, especially in the upper arch. Due to its shape and structure, the maxilla is an extremely challenging arch to reconstruct with dental implants.

Oral and Maxillofacial surgeons began utilizing alternative methods to replace missing teeth with osseointegrated dental implants in atrophic maxilla. As a result, different methods were developed for handling of this issue, including tilted implants, sinus elevation, the use of Pterygoid implants, the use of short implants and Zygomatic implants.

Conditions

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Atrophic Maxilla Zygomatic Implants

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

1. Randomized Controlled Clinical Trial.
2. Parallel group study.
3. Allocation Ratio 1:1.

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Each patient will be given a code by the researcher and the observers will be blind to which group this case belong. Patients, radiographic outcome assessor and statistician will be blinded.

Study Groups

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Computer guided intra sinus approach for Zygomatic implant placement.

After reflection of mucoperiosteal flap then the non-working tip of the coarse diamond bur will be inserted till the initial marking point and further preparation of osteotomy site will be performed along the lateral wall of maxillary sinus then sinus membrane will be reflected gently to get easily access for 3.5 mm drill or 4-4.5 mm diameter Zygomatic implant. The surgical stent will be inserted inside the patient's mouth; it will be adapted and held in place by the anchoring screws to Zygoma and osteotomy will progressively widened by using standard 2.9 mm diameter drill and 3.5 mm twist diameter drill.

Depth indicator will be used to determine the length of Zygomatic implant. Zygomatic implant will be placed.

The platform of Zygomatic implant will be emerged over and close to the top of the crest of the residual alveolar ridge near to first molar region. Closure will done with 3-0 silk suture.

Group Type EXPERIMENTAL

Zygomatic implants

Intervention Type PROCEDURE

the ideal way to support implant-based restorative procedures for full and partially edentulous patients who are missing bone in the upper posterior maxilla.

Computer guided extra sinus approach for Zygomatic implant placement.

After adequate exposure of surgical The surgical stent will inserted inside the patient's mouth; it will adapted and held in place by the anchoring screws to Zygoma and osteotomy will progressively widened by using standard 2.9 mm diameter drill and 3.5 mm twist diameter drill.

Depth indicator will be used to determine the length of Zygomatic implant. Zygomatic implant that will placed.

The platform of Zygomatic implant will be emerged over and close to the top of the crest of the residual alveolar ridge near to first molar region. Closure will done with 3-0 silk suture.

Group Type ACTIVE_COMPARATOR

Zygomatic implants

Intervention Type PROCEDURE

the ideal way to support implant-based restorative procedures for full and partially edentulous patients who are missing bone in the upper posterior maxilla.

Interventions

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Zygomatic implants

the ideal way to support implant-based restorative procedures for full and partially edentulous patients who are missing bone in the upper posterior maxilla.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

1. Patients with severely atrophic edentulous upper arch (Cawood class IV, V, VI) that could not be restored by other type of treatment
2. Patients who had at least 8-12 mm vertical bone height in anterior maxilla to allow installation of 2 conventional implants.
3. Lacking posterior maxillary bone support due to significant sinus pneumatistion
4. Good systemic health (ASA score I-II)
5. Highly motivated patients.

Exclusion Criteria

1. Patient not willing to give his/her informed consent.
2. Patients with systemic disease that did not permit the surgical procedure (including general anaesthesia).
3. Patients with uncontrolled diabetes or under bisphosphonate therapy.
4. Heavy smoker.(\> 20 cigarettes daily)
5. Patient with psychiatric problems, severe bruxism or other parafunctional habits.
6. Acute sinusitis.
7. Malignancy or pathology in Maxilla or Zygoma.

Minimum Eligible Age

40 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes