The Experts below are selected from a list of 2751 Experts worldwide ranked by ideXlab platform
Phattanapon Rhienmora - One of the best experts on this subject based on the ideXlab platform.
-
Automated outcome scoring in a virtual reality simulator for Endodontic Surgery
Computer Methods and Programs in Biomedicine, 2018Co-Authors: Myat Su Yin, Siriwan Suebnukarn, Peter Haddawy, Phattanapon RhienmoraAbstract:BACKGROUND AND OBJECTIVE We address the problem of automated outcome assessment in a virtual reality (VR) simulator for Endodontic Surgery. Outcome assessment is an essential component of any system that provides formative feedback, which requires assessing the outcome, relating it to the procedure, and communicating in a language natural to dental students. This study takes a first step toward automated generation of such comprehensive feedback. METHODS Virtual reference templates are computed based on tooth anatomy and the outcome is assessed with a 3D score cube volume which consists of voxel-level non-linear weighted scores based on the templates. The detailed scores are transformed into standard scoring language used by dental schools. The system was evaluated on fifteen outcome samples that contained optimal results and those with errors including perforation of the walls, floor, and both, as well as various combinations of major and minor over and under drilling errors. Five endodontists who had professional training and varying levels of experiences in root canal treatment participated as raters in the experiment. RESULTS Results from evaluation of our system with expert endodontists show a high degree of agreement with expert scores (information based measure of disagreement 0.04-0.21). At the same time they show some disagreement among human expert scores, reflecting the subjective nature of human outcome scoring. The discriminatory power of the AOS scores analyzed with three grade tiers (A, B, C) using the area under the receiver operating characteristic curve (AUC). The AUC values are generally highest for the {AB: C} cutoff which is cutoff at the boundary between clinically acceptable (B) and clinically unacceptable (C) grades. CONCLUSIONS The objective consistency of computed scores and high degree of agreement with experts make the proposed system a promising addition to existing VR simulators. The translation of detailed level scores into terminology commonly used in dental Surgery supports natural communication with students and instructors. With the reference virtual templates created automatically, the approach is robust and is applicable in scoring the outcome of any dental Surgery procedure involving the act of drilling.
-
use of haptic feedback to train correct application of force in Endodontic Surgery
Intelligent User Interfaces, 2017Co-Authors: Myat Su Yin, Siriwan Suebnukarn, Peter Haddawy, Holger Schultheis, Phattanapon RhienmoraAbstract:With the minute margins of error in Endodontic Surgery, training in manual dexterity and proper instrument handling are crucial components in the dental curriculum. Important parameters include tool path, tool angulation, and force applied. In this work, we focus on training of correct application of force. This is particularly challenging since the amounts of force used are on the order of tenths of Newtons, requiring a highly refined tactile sense and incorrect force can cause irreversible damage. Too great a force can cause overdrilling or in extreme cases perforation of the tooth. Too small a force can cause thermal irritation possibly resulting in tissue necrosis. Despite the importance of correct use of force, this is the dimension on which students receive the least tutorial feedback since force information is typically not available in traditional training settings. In this paper, we present an approach to using haptic feedback as a means to convey formative feedback on the correct application of force. Feedback is conveyed to the student graphically and the correct amount of force to apply is trained haptically. The simulator is rewound and the student is asked to redo the stage where the error occurred. Preliminary evaluation against a control group of students who received only feedback concerning outcome shows the feedback mechanism to be effective.
-
IUI - Use of Haptic Feedback to Train Correct Application of Force in Endodontic Surgery
Proceedings of the 22nd International Conference on Intelligent User Interfaces, 2017Co-Authors: Myat Su Yin, Siriwan Suebnukarn, Peter Haddawy, Holger Schultheis, Phattanapon RhienmoraAbstract:With the minute margins of error in Endodontic Surgery, training in manual dexterity and proper instrument handling are crucial components in the dental curriculum. Important parameters include tool path, tool angulation, and force applied. In this work, we focus on training of correct application of force. This is particularly challenging since the amounts of force used are on the order of tenths of Newtons, requiring a highly refined tactile sense and incorrect force can cause irreversible damage. Too great a force can cause overdrilling or in extreme cases perforation of the tooth. Too small a force can cause thermal irritation possibly resulting in tissue necrosis. Despite the importance of correct use of force, this is the dimension on which students receive the least tutorial feedback since force information is typically not available in traditional training settings. In this paper, we present an approach to using haptic feedback as a means to convey formative feedback on the correct application of force. Feedback is conveyed to the student graphically and the correct amount of force to apply is trained haptically. The simulator is rewound and the student is asked to redo the stage where the error occurred. Preliminary evaluation against a control group of students who received only feedback concerning outcome shows the feedback mechanism to be effective.
-
toward intelligent tutorial feedback in surgical simulation robust outcome scoring for Endodontic Surgery
Intelligent User Interfaces, 2016Co-Authors: Myat Su Yin, Siriwan Suebnukarn, Peter Haddawy, Phattanapon RhienmoraAbstract:Numerous VR simulators have been developed as a means of addressing limitations of the traditional apprenticeship approach to dental surgical skill training. Most existing simulators support intra- and extra-coronal procedures such as carries removal. In this paper we address the problem of automated outcome assessment for Endodontic Surgery. Outcome assessment is an essential component of any system that provides formative feedback, which requires assessing the outcome, relating it to the procedure, and communicating in a language natural to dental students. This paper takes a first step toward automated generation of such comprehensive feedback. Our system automatically computes reference templates based on tooth anatomy, which provides flexibility to adjust parameters such as tolerance and to create new templates on demand. Detailed scores are transformed into the standard scoring language used by dental schools. Preliminary evaluation of our system on fifteen outcome samples with three expert endodontists shows a high degree of agreement with expert scores.
-
IUI - Toward Intelligent Tutorial Feedback in Surgical Simulation: Robust Outcome Scoring for Endodontic Surgery
Proceedings of the 21st International Conference on Intelligent User Interfaces - IUI '16, 2016Co-Authors: Myat Su Yin, Siriwan Suebnukarn, Peter Haddawy, Phattanapon RhienmoraAbstract:Numerous VR simulators have been developed as a means of addressing limitations of the traditional apprenticeship approach to dental surgical skill training. Most existing simulators support intra- and extra-coronal procedures such as carries removal. In this paper we address the problem of automated outcome assessment for Endodontic Surgery. Outcome assessment is an essential component of any system that provides formative feedback, which requires assessing the outcome, relating it to the procedure, and communicating in a language natural to dental students. This paper takes a first step toward automated generation of such comprehensive feedback. Our system automatically computes reference templates based on tooth anatomy, which provides flexibility to adjust parameters such as tolerance and to create new templates on demand. Detailed scores are transformed into the standard scoring language used by dental schools. Preliminary evaluation of our system on fifteen outcome samples with three expert endodontists shows a high degree of agreement with expert scores.
Siriwan Suebnukarn - One of the best experts on this subject based on the ideXlab platform.
-
Automated outcome scoring in a virtual reality simulator for Endodontic Surgery
Computer Methods and Programs in Biomedicine, 2018Co-Authors: Myat Su Yin, Siriwan Suebnukarn, Peter Haddawy, Phattanapon RhienmoraAbstract:BACKGROUND AND OBJECTIVE We address the problem of automated outcome assessment in a virtual reality (VR) simulator for Endodontic Surgery. Outcome assessment is an essential component of any system that provides formative feedback, which requires assessing the outcome, relating it to the procedure, and communicating in a language natural to dental students. This study takes a first step toward automated generation of such comprehensive feedback. METHODS Virtual reference templates are computed based on tooth anatomy and the outcome is assessed with a 3D score cube volume which consists of voxel-level non-linear weighted scores based on the templates. The detailed scores are transformed into standard scoring language used by dental schools. The system was evaluated on fifteen outcome samples that contained optimal results and those with errors including perforation of the walls, floor, and both, as well as various combinations of major and minor over and under drilling errors. Five endodontists who had professional training and varying levels of experiences in root canal treatment participated as raters in the experiment. RESULTS Results from evaluation of our system with expert endodontists show a high degree of agreement with expert scores (information based measure of disagreement 0.04-0.21). At the same time they show some disagreement among human expert scores, reflecting the subjective nature of human outcome scoring. The discriminatory power of the AOS scores analyzed with three grade tiers (A, B, C) using the area under the receiver operating characteristic curve (AUC). The AUC values are generally highest for the {AB: C} cutoff which is cutoff at the boundary between clinically acceptable (B) and clinically unacceptable (C) grades. CONCLUSIONS The objective consistency of computed scores and high degree of agreement with experts make the proposed system a promising addition to existing VR simulators. The translation of detailed level scores into terminology commonly used in dental Surgery supports natural communication with students and instructors. With the reference virtual templates created automatically, the approach is robust and is applicable in scoring the outcome of any dental Surgery procedure involving the act of drilling.
-
a vr simulator for emergency management in Endodontic Surgery
Intelligent User Interfaces, 2017Co-Authors: Nat Sararit, Peter Haddawy, Siriwan SuebnukarnAbstract:We present a virtual reality simulator for teaching emergency management decision-making in Endodontic Surgery. Objectives of the simulator are to 1) teach how to correctly respond to a variety of emergency situations, 2) acclimate students to making decisions in stressful emergency situations and 3) teach students the situation awareness skills required to rapidly recognize and respond to emergencies. To meet these objectives, we present a simulator that permits emergency situations to be dynamically inserted at various points in the procedure and that is immersive. The simulator also allows a teacher to observe and review a session in real-time or post session. Preliminary evaluation of face and content validity shows that the simulation is sufficiently realistic and the system is a promising teaching tool.
-
IUI Companion - A VR Simulator for Emergency Management in Endodontic Surgery
Proceedings of the 22nd International Conference on Intelligent User Interfaces Companion - IUI '17 Companion, 2017Co-Authors: Nat Sararit, Peter Haddawy, Siriwan SuebnukarnAbstract:We present a virtual reality simulator for teaching emergency management decision-making in Endodontic Surgery. Objectives of the simulator are to 1) teach how to correctly respond to a variety of emergency situations, 2) acclimate students to making decisions in stressful emergency situations and 3) teach students the situation awareness skills required to rapidly recognize and respond to emergencies. To meet these objectives, we present a simulator that permits emergency situations to be dynamically inserted at various points in the procedure and that is immersive. The simulator also allows a teacher to observe and review a session in real-time or post session. Preliminary evaluation of face and content validity shows that the simulation is sufficiently realistic and the system is a promising teaching tool.
-
use of haptic feedback to train correct application of force in Endodontic Surgery
Intelligent User Interfaces, 2017Co-Authors: Myat Su Yin, Siriwan Suebnukarn, Peter Haddawy, Holger Schultheis, Phattanapon RhienmoraAbstract:With the minute margins of error in Endodontic Surgery, training in manual dexterity and proper instrument handling are crucial components in the dental curriculum. Important parameters include tool path, tool angulation, and force applied. In this work, we focus on training of correct application of force. This is particularly challenging since the amounts of force used are on the order of tenths of Newtons, requiring a highly refined tactile sense and incorrect force can cause irreversible damage. Too great a force can cause overdrilling or in extreme cases perforation of the tooth. Too small a force can cause thermal irritation possibly resulting in tissue necrosis. Despite the importance of correct use of force, this is the dimension on which students receive the least tutorial feedback since force information is typically not available in traditional training settings. In this paper, we present an approach to using haptic feedback as a means to convey formative feedback on the correct application of force. Feedback is conveyed to the student graphically and the correct amount of force to apply is trained haptically. The simulator is rewound and the student is asked to redo the stage where the error occurred. Preliminary evaluation against a control group of students who received only feedback concerning outcome shows the feedback mechanism to be effective.
-
IUI - Use of Haptic Feedback to Train Correct Application of Force in Endodontic Surgery
Proceedings of the 22nd International Conference on Intelligent User Interfaces, 2017Co-Authors: Myat Su Yin, Siriwan Suebnukarn, Peter Haddawy, Holger Schultheis, Phattanapon RhienmoraAbstract:With the minute margins of error in Endodontic Surgery, training in manual dexterity and proper instrument handling are crucial components in the dental curriculum. Important parameters include tool path, tool angulation, and force applied. In this work, we focus on training of correct application of force. This is particularly challenging since the amounts of force used are on the order of tenths of Newtons, requiring a highly refined tactile sense and incorrect force can cause irreversible damage. Too great a force can cause overdrilling or in extreme cases perforation of the tooth. Too small a force can cause thermal irritation possibly resulting in tissue necrosis. Despite the importance of correct use of force, this is the dimension on which students receive the least tutorial feedback since force information is typically not available in traditional training settings. In this paper, we present an approach to using haptic feedback as a means to convey formative feedback on the correct application of force. Feedback is conveyed to the student graphically and the correct amount of force to apply is trained haptically. The simulator is rewound and the student is asked to redo the stage where the error occurred. Preliminary evaluation against a control group of students who received only feedback concerning outcome shows the feedback mechanism to be effective.
Burcu Evlice - One of the best experts on this subject based on the ideXlab platform.
-
Effects of low-level laser therapy on soft and hard tissue healing after Endodontic Surgery
Lasers in Medical Science, 2018Co-Authors: Revnak Metin, Ufuk Tatli, Burcu EvliceAbstract:The aim of this prospective study was to examine possible benefits of low-level laser therapy (LLLT) on soft and hard tissue healing after Endodontic Surgery. Seventy-six endo-Surgery cases on maxillary incisors were included. The patients were assigned randomly into control and laser groups. In the laser group, gallium-aluminum-arsenide (GaAlAs) diode laser irradiation (810 nm, 129 mW, 3.87 J/cm^2) was performed immediately after Surgery and daily for postoperative 7 days from buccal and palatal surfaces (5 min for each side). In the control group, patients were not subjected laser therapy. The patients were compared in terms of pain, clinical and radiological findings, and life quality indexes [Oral Health Impact Profile-14 (OHIP-14) and General Oral Health Assessment Index (GOHAI)]. Seventy-one patients completed the study ( n = 37 for control group, n = 34 for laser group). The laser group showed better results in edema, wound healing, and the number of analgesic tablets used on the 1st, 3rd, and 7th postoperative days. Significant reduction in ecchymoses was observed in the laser group on the postop 3rd and 7th days. The patients had significantly lower pain on the 1st and 3rd postop days in laser group. The laser group showed significantly better results in OHIP-14 and GOHA indexes on postop days 1 and 3. The laser group showed significantly favorable results in terms of bone density, defect volume and area, and periapical index in the postop 3rd month. This study concluded that LLLT improved soft and hard tissue healing after Endodontic Surgery and also showed favorable effects on pain and life quality of patients especially in the early phase of healing period.
Euiseong Kim - One of the best experts on this subject based on the ideXlab platform.
-
Computer-aided Design/Computer-aided Manufacturing-guided Endodontic Surgery: Guided Osteotomy and Apex Localization in a Mandibular Molar with a Thick Buccal Bone Plate.
Journal of Endodontics, 2018Co-Authors: So Yeon Ahn, Namhoon Kim, Sunil Kim, Bekir Karabucak, Euiseong KimAbstract:Abstract A mandibular molar with a thick buccal bone plate is a challenging problem in Endodontic Surgery despite the increase in the success rate of Endodontic Surgery nowadays. This report describes the application of a surgical template to guide osteotomy and facilitate apex localization in a mandibular molar with a thick buccal bone plate. A 57-year-old woman visited the authors’ clinic for pain in tooth 19 and was diagnosed with symptomatic apical periodontitis in this previously treated tooth. Nonsurgical retreatment was performed; however, 2 years later, the patient reported pain in the same tooth. A periapical lesion was confirmed using cone-beam computed tomographic (CBCT) imaging, and Endodontic Surgery on the mesial root of tooth 19 was planned. After CBCT imaging and cast scan data were transferred to implant surgical planning software, the data were superimposed. In the superimposed model, an anchor pin was designed to target the mesial root apex of tooth 19. The surgical template was then printed using a 3-dimensional printer. Endodontic microSurgery included application of this printed surgical template. A computer-aided design/computer-aided manufacturing (CAD/CAM)-guided surgical template minimized the extent of osteotomy and enabled precise targeting of the apex in this case. There were no postoperative complications. A CAD/CAM-guided surgical template is useful in Endodontic Surgery for complicated cases.
-
computer aided design computer aided manufacturing guided Endodontic Surgery guided osteotomy and apex localization in a mandibular molar with a thick buccal bone plate
Journal of Endodontics, 2018Co-Authors: So Yeon Ahn, Namhoon Kim, Sunil Kim, Bekir Karabucak, Euiseong KimAbstract:Abstract A mandibular molar with a thick buccal bone plate is a challenging problem in Endodontic Surgery despite the increase in the success rate of Endodontic Surgery nowadays. This report describes the application of a surgical template to guide osteotomy and facilitate apex localization in a mandibular molar with a thick buccal bone plate. A 57-year-old woman visited the authors’ clinic for pain in tooth 19 and was diagnosed with symptomatic apical periodontitis in this previously treated tooth. Nonsurgical retreatment was performed; however, 2 years later, the patient reported pain in the same tooth. A periapical lesion was confirmed using cone-beam computed tomographic (CBCT) imaging, and Endodontic Surgery on the mesial root of tooth 19 was planned. After CBCT imaging and cast scan data were transferred to implant surgical planning software, the data were superimposed. In the superimposed model, an anchor pin was designed to target the mesial root apex of tooth 19. The surgical template was then printed using a 3-dimensional printer. Endodontic microSurgery included application of this printed surgical template. A computer-aided design/computer-aided manufacturing (CAD/CAM)-guided surgical template minimized the extent of osteotomy and enabled precise targeting of the apex in this case. There were no postoperative complications. A CAD/CAM-guided surgical template is useful in Endodontic Surgery for complicated cases.
Peter Haddawy - One of the best experts on this subject based on the ideXlab platform.
-
Automated outcome scoring in a virtual reality simulator for Endodontic Surgery
Computer Methods and Programs in Biomedicine, 2018Co-Authors: Myat Su Yin, Siriwan Suebnukarn, Peter Haddawy, Phattanapon RhienmoraAbstract:BACKGROUND AND OBJECTIVE We address the problem of automated outcome assessment in a virtual reality (VR) simulator for Endodontic Surgery. Outcome assessment is an essential component of any system that provides formative feedback, which requires assessing the outcome, relating it to the procedure, and communicating in a language natural to dental students. This study takes a first step toward automated generation of such comprehensive feedback. METHODS Virtual reference templates are computed based on tooth anatomy and the outcome is assessed with a 3D score cube volume which consists of voxel-level non-linear weighted scores based on the templates. The detailed scores are transformed into standard scoring language used by dental schools. The system was evaluated on fifteen outcome samples that contained optimal results and those with errors including perforation of the walls, floor, and both, as well as various combinations of major and minor over and under drilling errors. Five endodontists who had professional training and varying levels of experiences in root canal treatment participated as raters in the experiment. RESULTS Results from evaluation of our system with expert endodontists show a high degree of agreement with expert scores (information based measure of disagreement 0.04-0.21). At the same time they show some disagreement among human expert scores, reflecting the subjective nature of human outcome scoring. The discriminatory power of the AOS scores analyzed with three grade tiers (A, B, C) using the area under the receiver operating characteristic curve (AUC). The AUC values are generally highest for the {AB: C} cutoff which is cutoff at the boundary between clinically acceptable (B) and clinically unacceptable (C) grades. CONCLUSIONS The objective consistency of computed scores and high degree of agreement with experts make the proposed system a promising addition to existing VR simulators. The translation of detailed level scores into terminology commonly used in dental Surgery supports natural communication with students and instructors. With the reference virtual templates created automatically, the approach is robust and is applicable in scoring the outcome of any dental Surgery procedure involving the act of drilling.
-
a vr simulator for emergency management in Endodontic Surgery
Intelligent User Interfaces, 2017Co-Authors: Nat Sararit, Peter Haddawy, Siriwan SuebnukarnAbstract:We present a virtual reality simulator for teaching emergency management decision-making in Endodontic Surgery. Objectives of the simulator are to 1) teach how to correctly respond to a variety of emergency situations, 2) acclimate students to making decisions in stressful emergency situations and 3) teach students the situation awareness skills required to rapidly recognize and respond to emergencies. To meet these objectives, we present a simulator that permits emergency situations to be dynamically inserted at various points in the procedure and that is immersive. The simulator also allows a teacher to observe and review a session in real-time or post session. Preliminary evaluation of face and content validity shows that the simulation is sufficiently realistic and the system is a promising teaching tool.
-
IUI Companion - A VR Simulator for Emergency Management in Endodontic Surgery
Proceedings of the 22nd International Conference on Intelligent User Interfaces Companion - IUI '17 Companion, 2017Co-Authors: Nat Sararit, Peter Haddawy, Siriwan SuebnukarnAbstract:We present a virtual reality simulator for teaching emergency management decision-making in Endodontic Surgery. Objectives of the simulator are to 1) teach how to correctly respond to a variety of emergency situations, 2) acclimate students to making decisions in stressful emergency situations and 3) teach students the situation awareness skills required to rapidly recognize and respond to emergencies. To meet these objectives, we present a simulator that permits emergency situations to be dynamically inserted at various points in the procedure and that is immersive. The simulator also allows a teacher to observe and review a session in real-time or post session. Preliminary evaluation of face and content validity shows that the simulation is sufficiently realistic and the system is a promising teaching tool.
-
use of haptic feedback to train correct application of force in Endodontic Surgery
Intelligent User Interfaces, 2017Co-Authors: Myat Su Yin, Siriwan Suebnukarn, Peter Haddawy, Holger Schultheis, Phattanapon RhienmoraAbstract:With the minute margins of error in Endodontic Surgery, training in manual dexterity and proper instrument handling are crucial components in the dental curriculum. Important parameters include tool path, tool angulation, and force applied. In this work, we focus on training of correct application of force. This is particularly challenging since the amounts of force used are on the order of tenths of Newtons, requiring a highly refined tactile sense and incorrect force can cause irreversible damage. Too great a force can cause overdrilling or in extreme cases perforation of the tooth. Too small a force can cause thermal irritation possibly resulting in tissue necrosis. Despite the importance of correct use of force, this is the dimension on which students receive the least tutorial feedback since force information is typically not available in traditional training settings. In this paper, we present an approach to using haptic feedback as a means to convey formative feedback on the correct application of force. Feedback is conveyed to the student graphically and the correct amount of force to apply is trained haptically. The simulator is rewound and the student is asked to redo the stage where the error occurred. Preliminary evaluation against a control group of students who received only feedback concerning outcome shows the feedback mechanism to be effective.
-
IUI - Use of Haptic Feedback to Train Correct Application of Force in Endodontic Surgery
Proceedings of the 22nd International Conference on Intelligent User Interfaces, 2017Co-Authors: Myat Su Yin, Siriwan Suebnukarn, Peter Haddawy, Holger Schultheis, Phattanapon RhienmoraAbstract:With the minute margins of error in Endodontic Surgery, training in manual dexterity and proper instrument handling are crucial components in the dental curriculum. Important parameters include tool path, tool angulation, and force applied. In this work, we focus on training of correct application of force. This is particularly challenging since the amounts of force used are on the order of tenths of Newtons, requiring a highly refined tactile sense and incorrect force can cause irreversible damage. Too great a force can cause overdrilling or in extreme cases perforation of the tooth. Too small a force can cause thermal irritation possibly resulting in tissue necrosis. Despite the importance of correct use of force, this is the dimension on which students receive the least tutorial feedback since force information is typically not available in traditional training settings. In this paper, we present an approach to using haptic feedback as a means to convey formative feedback on the correct application of force. Feedback is conveyed to the student graphically and the correct amount of force to apply is trained haptically. The simulator is rewound and the student is asked to redo the stage where the error occurred. Preliminary evaluation against a control group of students who received only feedback concerning outcome shows the feedback mechanism to be effective.