Human skull robot as a mechanical patient simulator for mouth opening and closing training

2002 ◽  
Author(s):  
H. Takanobu ◽  
K. Nakamura ◽  
A. Takanishi ◽  
K. Ohtsuki ◽  
D. Ozawa ◽  
...  
Keyword(s):  
Mouth Opening ◽  
Patient Simulator ◽  
Human Skull ◽  
Opening And Closing

Patient Simulator for Mouth Opening and Closing Training

Romansy 14 ◽  
2002 ◽  
pp. 549-555
Author(s):  
Hideaki Takanobu ◽  
Kazuyoshi Nakamura ◽  
Atsuo Takanishi ◽  
Kayoko Ohtsuki ◽  
Masatoshi Ohnishi ◽  
...  
Keyword(s):  
Mouth Opening ◽  
Patient Simulator ◽  
Opening And Closing

scholarly journals A New Tridimensional Insight into Geometric and Kinematic Characteristics of Masticatory Cycles in Participants with Normal Occlusion

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Ramón Fuentes ◽  
Alain Arias ◽  
María Florencia Lezcano ◽  
Diego Saravia ◽  
Gisaku Kuramochi ◽  
...  
Keyword(s):  
Mouth Opening ◽  
Mandibular Movement ◽  
Electromagnetic Articulography ◽  
Kinematic Characteristics ◽  
Normal Occlusion ◽  
Significant Difference ◽  
Number Of Cycles ◽  
Opening And Closing ◽  
Mandibular Movements ◽  
Insight Into

The aim of this study was to analyze the general, geometric, and kinematic characteristics of the masticatory cycle’s movements in a tridimensional way, using a method developed by our study group to provide a new insight into the analysis of mandibular movements due to advancement in the potential of computational analysis. Ten individuals (20.1 ± 2.69 years), molar class I, without mandibular movement problems participated in this study. The movements of the masticatory cycles, frontal and sagittal mandibular border movements, were recorded using 3D electromagnetic articulography and processed with computational scripts developed by our research group. The number of chewing cycles, frequency (cycles/s), chewing cycle areas/mandibular border movements areas ratios, and the mouth opening and closing speeds on the 3D trajectory of the chewing cycle were compared. The cycles were divided and analyzed in thirds. The masticatory cycles showed high variation among the individuals (21.6 ± 9.4 cycles); the frequency (1.46 ± 0.21 cycles/s) revealed a moderate positive correlation (R = 0.52) with the number of cycles. The frontal area ratios between the cycle area and the mandibular border movement presented higher values in the first third (6.65%) of the masticatory cycles, and the ratios of sagittal areas were higher and more variable (first, 7.67%; second, 8.06%; and third, 10.04%) than the frontal view. The opening and closing mouth speeds were greater in the second third of the masticatory cycles (OS, 57.82 mm/s; CS, 58.34 mm/s) without a significant difference between the opening and closing movements when the same thirds were evaluated. Further studies are necessary to improve the understanding of the masticatory cycles regarding the standardization of parameters and their values.

scholarly journals Validating an infrared thermal switch as a novel access technology

2021 ◽  
Author(s):  
Negar Memarian ◽  
Anastasios Venetsanopoulos ◽  
Tom Chau
Keyword(s):  
Gold Standard ◽  
Mouth Opening ◽  
User Performance ◽  
Access Technology ◽  
Thermal Switch ◽  
Qualitative Feedback ◽  
Multiple Trials ◽  
Audiovisual Stimuli ◽  
Surrounding Areas ◽  
Opening And Closing

Background Recently, a novel single-switch access technology based on infrared thermography was proposed. The technology exploits the temperature differences between the inside and surrounding areas of the mouth as a switch trigger, thereby allowing voluntary switch activation upon mouth opening. However, for this technology to be clinically viable, it must be validated against a gold standard switch, such as a chin switch, that taps into the same voluntary motion. Methods In this study, we report an experiment designed to gauge the concurrent validity of the infrared thermal switch. Ten able-bodied adults participated in a series of 3 test sessions where they simultaneously used both an infrared thermal and conventional chin switch to perform multiple trials of a number identification task with visual, auditory and audiovisual stimuli. Participants also provided qualitative feedback about switch use. User performance with the two switches was quantified using an efficiency measure based on mutual information. Results User performance (p = 0.16) and response time (p = 0.25) with the infrared thermal switch were comparable to those of the gold standard. Users reported preference for the infrared thermal switch given its non-contact nature and robustness to changes in user posture. Conclusions Thermal infrared access technology appears to be a valid single switch alternative for individuals with disabilities who retain voluntary mouth opening and closing.

Universal Dental Robot — 6-DOF Mouth Opening and Closing Training Robot WY-5

2000 ◽  
pp. 275-284 ◽  
Author(s):  
Hideaki Takanobu ◽  
Takeo Maruyama ◽  
Atsuo Takahashi ◽  
Kayoko Ohtsuki ◽  
Masatoshi Ohnishi
Keyword(s):  
Mouth Opening ◽  
Opening And Closing

Incisal Paths During Habitual Mouth Opening and Closing Movements of Children with Anterior Reverse Bite in the Early Mixed Dentition

CRANIO® ◽  
2004 ◽  
Vol 22 (4) ◽  
pp. 289-296 ◽  
Author(s):  
Kyoko Satoh ◽  
Youichi Yamasaki ◽  
Haruaki Hayasaki ◽  
Megumi Nishi ◽  
Minoru Nakata
Keyword(s):  
Mouth Opening ◽  
Mixed Dentition ◽  
Opening And Closing

The Effect of Interincisal Opening, Cavity Location and Operator Experience on the Energy Delivered by a Light-Curing Unit to a Simulated Dental Restoration

2014 ◽  
Vol 3 (2) ◽  
pp. 26-31 ◽  
Author(s):  
Nor Asilah Harun ◽  
Ario Santini ◽  
Elizabeth M Roebuck
Keyword(s):  
Total Energy ◽  
Mouth Opening ◽  
Nonparametric Test ◽  
Dental Restoration ◽  
Clinical Environment ◽  
Patient Simulator ◽  
Operator Experience ◽  
Second Molar ◽  
Significant Difference ◽  
Light Curing

Background Curing of resin-based composites depends on the delivery of adequate total energy, which may be operator dependent. Aim To determine the effect of interincisal opening, cavity location and operator experience on the total energy delivered to simulated cavity preparation sites. Design Three cohorts were included: junior dental nurses, senior dental nurses and qualified dentists (N=5, each cohort). Each operator (participant) followed the same procedure and light-cured two simulated restorations in a MARC® patient simulator using a Demi™ light-curing unit for 20 seconds in each of the following situations: left upper second molar (UL7), interincisal opening at both 25mm and 45mm; upper central incisor (UR1), interincisal opening at 45mm. The light energy delivered by each operator in each situation was recorded. Five readings for each operator were taken at each interincisal distance. Statistical comparisons of delivered energy (J/cm2) between interincisal openings, location and groups in the total energy delivered were performed using the Kruskal-Wallis nonparametric test: α=0.05. Results Less total energy was delivered to the posterior cavity at 25mm (12.0 ± 5.3J/cm2) than at 45mm (16.9 ± 5.6J/cm2) by all operators ( P<0.05). At 45mm, less total energy was delivered to the posterior cavity compared to the anterior cavity (25.1 ± 7.4J/cm2; P<0.05). There was no statistically significant difference between junior nurses and qualified dentists ( P>0.05) but there was a significant difference in the total energy delivered between senior nurses (20.1 ± 7.8J/cm2) and junior nurses (17.5 ± 7.6J/cm2) and between senior nurses and qualified dentists (16.6 ± 8.7J/cm2) ( P<0.05). Conclusions Interincisal mouth opening, location of the cavity and operator experience affected the total energy delivered to cavities in a simulated clinical environment.

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