Objective assessment of progressive increase in bite force post surgical correction of mandibular fractures using Nupai bite scan analyser
DOI:
https://doi.org/10.18203/2320-6012.ijrms20212236Keywords:
Bite force, Mandible fractures, Internal fixationAbstract
Background: Fracture of mandible is a common condition which is increasing in incidence in the trauma centers due to increasing motor vehicles and failure to abide by traffic regulations. Patients undergo surgical open reduction and internal fixation where post-operative occlusion and normal masticatory functions are targeted. Bite force can be taken as a guide of normal masticatory function of an individual which is dependent upon craniomandibular biomechanics. The aim of the study was to analyse bite force measurements post-operatively in patients who underwent open reduction and internal fixation for mandible fractures at different sites.
Methods: Molar bite force was recorded in 31 post-operative patients who underwent open surgical procedure for fracture mandible in the department of plastic surgery from January 2018 to June 2019 by a pre-scale bite force recorder-Nupai bite force prescale system (FujiTM). Various parameters were recorded pre and post-operatively including age, gender, history, comorbidities, requirement of MMF, site and number of fractures and age of injury. Bite force were compared and improvement of bite force every 2 weeks was noted and analyzed upto 6 weeks postoperatively.
Results: Bite force improvement was seen in all types of mandible fractures irrespective of the site and type of fractures over a period of 6 weeks post-operatively. This improvement was however not statistically significant. Decreased time interval form injury to surgery resulted in improved bite force measurements though not statistically significant.
Conclusions: Although objective improvement in bite force could be demonstrated but extensive study involving more subjects and more patient variables would have statistical significance.
References
Natu SS, Pradhan H, Gupta H, Alam S, Gupta S, Pradhan R, et al. An epidemiological study on pattern and incidence of mandibular fractures. Plastic surgery international. 2012;2012:834-6.
Sirimaharaj W, Pyungtanasup K. The epidemiology of mandibular fractures treated at Chiang Mai University Hospital: a review of 198 cases. J Med Assoc Thai. 2008;91(6):868-74.
Ortuğ G. A new device for measuring mastication force (Gnathodynamometer). Ann Anat Anatomischer Anzeiger. 2002;184(4):393-6.
Bakke M. Bite force and occlusion. Semin Orthod. 2006;12(2):120-6.
Ferrario VF, Sforza C, Zanotti G, Tartagilia GM. Maximal bite force in healthy young adults as predicted by surface electromyography. J Dent. 2004;32(6):451-7.
Castroflorio T, Bracco P, Farina D. Surface electromyography in the assessment of jaw elevator muscles. J Oral Rehabil. 2008;35(8):638-45.
Ellis E, Throckmorton GS. Bite forces after open or closed treatment of mandibular condylar process fractures. J Oral Maxillofac Surg. 2001;59(4):389-95
Tate GS, Ellis E, Throckmorton G. Bite forces in patients treated for mandibular angle fractures: Implications for fixation recommendations. J Oral Maxillofac Surg. 1994:52(7):734-6.
Heald J. The human skull used as a gnathodynamometer to determine the value of trituration in the mastication of food. Cosmos. 1906;48:1189-92.
Anderson DJ. Measurement of stress in mastication. J Dent Res. 1955;35(5):665-70.
Sandberg CL, Yules RB. The Bite-Ometer. Arch Otolaryngol. 1969;89(4):682-4.
Shah P, Anehosur G, Nadiger R, Lekha K. A study to compare the sensitivity of nupai bite scan to T-scan system. Indian J Stomatol. 2015;6:22-6.
Varga S, Spalj S, Varga ML, Milosevic SA, Mestrovic S, Slaj M. Maximum voluntary molar bite force in subjects with normal occlusion. Eur J Orthod. 2011;33(4):427-33.
Braun S, Hnat WP, Freudenthaler JW, Marcotte MR, Hönigle K, Johnson BE. A study of maximum bite force during growth and development.Angle Orthodontist.1996;66(4):261-4.
Sasaki K, Hannam AG, Wood WW. Relationships between the size, position, and angulation of human jaw muscles and unilateral first molar bite force. J Dent Res. 1989;68(3):499-503.
Champy M, Lodde JP, Schmit R, Jaeger JH, Muster D. Mandibular osteosynthesis by miniature screwed plates via a buccal approach. J Maxillofac Surg. 1978:6(1):14-21.
Gerlach KL, Schwarz A. Bite forces in patients after treatment Of mandibular angle fractures with miniplate osteosynthesis according to Champy. Int J Oral Maxillofac Surg. 2002;31(4):345-8.
Sonnenburg M, Voelker H. The resilience of the fractured lower jaw in depends on the treatment method. Dtsch Z Mund Kiefer Gesichts Chir. 1982:6:409-13.
Garrett FA, Angelone L, Allen WI. The effect of bite opening, bite pressure, and malocclusion on the electrical response of the masseter muscles. Am J Orthod. 1964;50:435-44.
