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All-on- 4 dental implant concept in immediate rehabilitation of failing dentition–a prospective study to evaluate the efficacy and cost effectiveness in Indian population


Journal of Dental Health, Oral Disorders & Therapy
Sthita Gurrala, Vikas Dhupar, Francis Akkara

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Abstract

Background: The close proximity of anatomical structures in atrophied ridges makes placement of conventional implants difficult. However the use of tilted implants and immediate restoration has made rehabilitation of these ridges simpler: by eliminating various ridge augmentation procedures and the waiting period prior to prosthetic rehabilitation.
Purpose: To evaluate the stability of implants used to restore the edentulous ridges by clinical and radiological assessment, change in the marginal bone level and patient satisfaction.
Materials & methods: This study included 15 edentulous jaws. Sixty implants were placed using the All-on-Four concept. Immediate loading of implants was done with a full arch acrylic prosthesis (intermediate prosthesis).
Results: This study concluded that out of 60 implants that were placed during the course of the treatment 56 implants were stable for the time the patients were followed up. Four tilted implant failures were seen.
Conclusion: Implant survival rate and the prosthetic survival rate was 93.3%. A mean marginal bone loss of 0.49mm and 0.09mm was seen in the mandible and maxilla. The marginal bone loss was higher around the tilted implants (0.37mm).
Background: The close proximity of anatomical structures in atrophied ridges makes placement of conventional implants difficult. However the use of tilted implants and immediate restoration has made rehabilitation of these ridges simpler: by eliminating various ridge augmentation procedures and the waiting period prior to prosthetic rehabilitation.
Purpose: To evaluate the stability of implants used to restore the edentulous ridges by clinical and radiological assessment, change in the marginal bone level and patient satisfaction.
Materials and methods: This study included 15 edentulous jaws. Sixty implants were placed using the All-on-Four concept. Immediate loading of implants was done with a full arch acrylic prosthesis (intermediate prosthesis).
Results: This study concluded that out of 60 implants that were placed during the course of the treatment 56 implants were stable for the time the patients were followed up. Four tilted implant failures were seen.
Conclusion: Implant survival rate and the prosthetic survival rate was 93.3%. A mean marginal bone loss of 0.49mm and 0.09mm was seen in the mandible and maxilla. The marginal bone loss was higher around the tilted implants (0.37mm).

Keywords

all-on-four, edentulous jaws, failing dentition, tilted implants, initial torque, immediate function, immediate loading, acrylic prosthesis, complete arch, patient satisfaction

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