Aim and objective: The purpose of this prototype model was to provide a novel and accessible facebow transfer.
Background: The practical application of this technique helps overcome the drawbacks of conventional facebow in providing accurate parallelism and precise midline orientation.
Technique: A MEMS-based three-axis gyroscope sensor is used for three axis rotational measurement. The electrical output of the gyroscope is via microcontroller that is driven to the OLED screen through I2C serial communication. A precise facial midline was obtained by using adjustable laser module of 650 nm in the current developed system. This detachable assembly was mounted on the Hanau spring bow and was evaluated on two patients.
Conclusion: Incorporation of the Gyro sensor with the adjustable laser light indicator in Hanau spring bow achieved accurate orientation of the occlusal plane and also helps in precise midline positioning, thereby decreasing occlusal errors and increasing the precision of the facebow.
Ogawa T, Koyano K, Suetsugu T. The relationship between inclination of occlusal plane and jaw closing path. J Prosthet Dent 1996;76(6):576–580. DOI: 10.1016/S0022-3913(96)90432-1.
Ow RK, Djeng SK, Ho CK. Orientation of the plane of occlusion. J Prosthet Dent 1990;64(1):31–36. DOI: 10.1016/0022-3913(90)90149-7.
Kumar M, D’Souza D. Comparative evaluation of two techniques in achieving balanced occlusion in complete dentures. Med J Armed Forces India 2010;66(4):362–366. DOI: 10.1016/S0377-1237(10)80019-X.
Shetty S, Shenoy KK, Sabu A. Evaluation of accuracy of transfer of the maxillary occlusal cant of two articulators using two facebow/semi-adjustable articulator systems: an in vivo study. J Indian Prosthodont Soc 2016;16:248–252.
Chandrasekharan Nair K, Srividya S. Face bow transfer. TPDI 2012;3:44–46.
Sadhvi KV. Spirit level markers for face bow articulation. Kerala Dental Journal 2009;32(2):75–76.
Patil UA, Dhami LD. Overview of lasers. Indian J Plast Surg 2008;41(S 01):S101–S113. DOI: 10.1055/s-0039-1700481.
Gámez J, Dib A, Espinosa IA. Facebows in the development of Michigan occlusal splints. Rev Fac Odontol Univ Antioq 2013;25:117–131.
Carlsson GE. Some dogmas related to prosthodontics, temporomandibular disorders and occlusion. Acta Odontol Scand 2010;68(6):313–322. DOI: 10.3109/00016357.2010.517412.
Farias-Neto A, Dias AH, de Miranda BF, et al. Face-bow transfer in prosthodontics: a systematic review of the literature. J Oral Rehabil 2013;40(9):686–692. DOI: 10.1111/joor.12081.
Hugger ATJ, Pröschel P, Strub JR, et al. The application of arbitrary face bow registration and transfer—which level of evidence exists? Dtsch Zahnärztl Z 2009;56(11):671–675.
Wilkerson DC. The need for face bows. J Am Dent Assoc 2016;147(9):696–697. DOI: 10.1016/j.adaj.2016.07.005.
Shah K, Koka S. Evidence-based practice and barriers to compliance: Face bow transfer. J Prosthodont Res 2016;60(1):20–22. DOI: 10.1016/j.jpor.2015.09.004.
Wang MQ, Xue F, Chen J, et al. Evaluation of the use of and attitudes towards a face–bow in complete denture fabrication: a pilot questionnaire investigation in Chinese prosthodontists. J Oral Rehabil 2008;35(9):677–681. DOI: 10.1111/j.1365-2842.2007.01835.x.
Ahlers MO, Edelhoff D, Jakstat HA. Reproduction accuracy of articulator mounting with an arbitrary face-bow vs. Average values- a controlled, randomized, blinded patient simulator study. Clin Oral Invest 2019(3):1007–1014. DOI: 10.1007/s00784-018-2499-6.
Maddula RT, Ariga P, Jain AR. Efficacy of the modified arbitrary facebow for recording the orientation jaw relation - an experimental study. Drug Invention Today 2018;10(9):1635–1640.