MANDIBULAR FLEXURE – A REASON FOR CHRONIC PAIN SYNDROME IN EDENTULOUS PATIENT RESTORED WITH FIXED ZRO2 CONSTRUCTION OVER IMPLANTS, INSERTED IN NATURAL BONE AND BONE GRAFT AREA. Case report

Abadzhiev, Metodi; Todorov, Georgi; Kamberov, Konstantin

doi:10.5272/jimab.2017231.1432

Cited by 2 publications

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“…This may be because this prosthesis served for a very long time, which allowed these problems to accumulate and become accentuated [ 16 ]. In this study, all patients showed severe bone resorption around the canine and premolar at the corner of the mouth, where the flexure stresses of the rigid connection of the fixed prosthesis may be most manifested [ 7 ].…”

Section: Discussionmentioning

confidence: 99%

“…Mandibular flexion was also observed during clenching, occlusion, or biting in the mandible [ 3 – 6 ]. Metal and zirconia fixed prostheses have low elasticity, which greatly limits mandibular flexure, especially when the entire natural dentition is splinted with one unit of a metal-ceramic or zirconia prosthesis [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, in need of long-span mandibular fixed restorations, segmented bridges are the more predictable practice to counteract the mandibular deformation during wide mouth opening and its potential negative consequences [ 8 , 9 ]. These consequences ranged from pain at certain sites like the corner of the mouth, severe bone resorption, cystic formation, tooth mobility, porcelain chipping, and sometimes breakage of the prosthesis [ 7 , 10 – 12 ]. These negative consequences of bone resorption require the application of bone grafts and pericardium membranes [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

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Retrospective digital study of mandibular flexure in patients with long-span fixed restorations supported by natural teeth

El Charkawi,

Nassar,

Abdelaziz

2023

BMC Res Notes

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Purpose This retrospective study aims to evaluate the mandibular flexure on a long-span rigid fixed prosthesis supported by natural teeth. Materials and methods Nine patients (five males and four females) were included in this study who had long-span rigid mandibular fixed prostheses for long-term (10–15 years) that have led to radiographic changes around the supporting teeth. The mandibular flexure was measured digitally after adhering reference markers to the prostheses. Intraoral scans were obtained at the minimum and maximum mouth openings before and after splitting the preexisting prostheses. The distances between the markers were measured, and mandibular flexure was calculated. Results This study showed a significant deviation (narrowing) of the mandible before and after splitting the rigid fixed prostheses (P value < 0.05). Conclusion Digital analysis of the data collected from the patients in this retrospective study indicated that deviations occur during mandibular flexure. Clinical relevance Splitting the full arch prosthesis could prevent the negative consequences of mandibular flexure on restorations. Trial registration The study was registered on clinicaltrials.gov with registration number NCT05617274 (15/11/2022)

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Retrospective digital study of mandibular flexure in patients with long-span fixed restorations supported by natural teeth

El Charkawi,

Nassar,

Abdelaziz

2023

BMC Res Notes

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“…MMF plays a crucial role in selecting materials for implant denture superstructures. Implant-supported rigid splints can limit the extent of MF, and the degree of inhibition is proportional to the number of connected implants and the materials stiffness ( Favot et al, 2014 ; Abadzhiev et al, 2017 ) reported that MMF contributes to chronic pain syndrome in edentulous patients with implant-supported fixed restorations. ( Favot et al, 2014 ).…”

Section: The Impact Of Mmf On Implant Restorationmentioning

confidence: 99%

Median mandibular flexure—the unique physiological phenomenon of the mandible and its clinical significance in implant restoration

Gao,

Jiang,

Zhao

2023

Front. Bioeng. Biotechnol.

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Mandibular flexure, characterized by unique biomechanical behaviors such as elastic bending and torsion under functional loading, has emerged as a crucial factor in oral clinical diagnosis and treatment. This paper presents a comprehensive review of the current research status on mandibular flexure, drawing insights from relevant studies retrieved from the PubMed database (www.ncbi.nlm.nih.gov/pubmed), including research conclusions, literature reviews, case reports, and authoritative reference books. This paper thoroughly explores the physiological mechanisms underlying mandibular flexure, discussing different concurrent deformation types and the essential factors influencing this process. Moreover, it explores the profound implications of mandibular flexure on clinical aspects such as bone absorption around dental implants, the precision of prosthesis fabrication, and the selection and design of superstructure materials. Based on the empirical findings, this review provides crucial clinical recommendations. Specifically, it is recommended to exert precise control over the patients mouth opening during impression-taking. Those with a high elastic modulus or bone-tissue-like properties should be prioritized when selecting superstructure materials. Moreover, this review underscores the significance of customizing framework design to accommodate individual variations in facial morphology and occlusal habits. Future research endeavors in this field have the potential to advance clinical diagnosis and treatment approaches, providing opportunities for improvement.

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MANDIBULAR FLEXURE – A REASON FOR CHRONIC PAIN SYNDROME IN EDENTULOUS PATIENT RESTORED WITH FIXED ZRO2 CONSTRUCTION OVER IMPLANTS, INSERTED IN NATURAL BONE AND BONE GRAFT AREA. Case report

Cited by 2 publications

References 0 publications

Retrospective digital study of mandibular flexure in patients with long-span fixed restorations supported by natural teeth

Retrospective digital study of mandibular flexure in patients with long-span fixed restorations supported by natural teeth

Median mandibular flexure—the unique physiological phenomenon of the mandible and its clinical significance in implant restoration

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