Masseter muscle activity of conventional denture, fixed prosthesis, and milled bar overdenture used for All‐on‐4 implant rehabilitation: A within‐subject study
| Autor: | Iman A. El-Asfahani, Moustafa Abdou Elsyad, Samah I Mourad, Sahar Ahmed Kortam |
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| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_treatment
0206 medical engineering Denture Complete Lower Mandible 02 engineering and technology Prosthesis Osseointegration Masseter muscle 03 medical and health sciences 0302 clinical medicine Humans Medicine General Dentistry Mastication Orthodontics Masseter Muscle business.industry 030206 dentistry Denture Overlay 020601 biomedical engineering Masticatory force Patient Satisfaction All-on-4 Dental Prosthesis Implant-Supported Implant Oral Surgery Dentures business |
| Zdroj: | Clinical Implant Dentistry and Related Research. 23:408-416 |
| ISSN: | 1708-8208 1523-0899 |
| Popis: | Purpose to examine the electromyographic (EMG) activity of the masseter muscles in patients with conventional dentures and compare it to EMG activity of fixed prosthesis, and milled bar overdentures used to rehabilitate mandibular atrophied ridges according to the All-on-4 concept. Methods Eighteen edentulous subjects with atrophied mandibles received complete dentures (CD, control). After 3 months, four implants were installed between the mental foramina according to the "All-on-4" protocol and loaded immediately. After osseointegration, fixed prostheses (FPD) or milled bar overdentures (MBO) were given to the patients in random order. Primary (amplitude), and secondary (chewing rate, time of the masticatory cycle, time of masticatory burst, and masticatory time) outcomes were evaluated 3 months after using CD, FPD, and MBO. The evaluations were made during mastication of carrot (hard) and cake (soft) foods. Results FPD and MBO were associated with a significantly higher (amplitude, time of masticatory cycle, and time of masticatory burst), and significantly lower (chewing rate and masticatory time) compared with conventional dentures. Primary and secondary outcomes did not differ between FPD and MBO. Carrot had significantly higher amplitude, chewing rate, time of masticatory burst, and masticatory time than cake, while cake had a significantly higher time of masticatory cycle than carrot. Conclusions Within limitations of this study, milled bar overdentures for All-on-4 implant rehabilitation of atrophied mandible is not less efficient than fixed prostheses in terms of electromyographic activity of the masseter muscle. Both prostheses significantly improve muscle activity, chewing rate, time of masticatory cycle, time of masticatory burst, and masticatory time compared with conventional dentures. |
| Databáze: | OpenAIRE |
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