ﻣﺠﻠﻪ دﻧﺪاﻧﭙﺰﺷﮑﯽ داﻧﺸﮕﺎه ﻋﻠﻮم ﭘﺰﺷﮑﯽ و ﺧﺪﻣﺎت ﺑﻬﺪاﺷﺘﯽ، درﻣﺎﻧﯽ ﺗﻬﺮان) دوره28 ، ﺷﻤﺎره4 ، زﻣﺴﺘﺎن1394 ( 266 ارز ﯾ ﺎﺑ ﯽ ﺗﺤﻠ ﯿ ﻞ ﺣﺮارﺗ ﯽ ﻋﺪد ي ﺳﻮراﺧﮑﺎر ي اﺳﺘﺨﻮان ﻓﮏ در ﺟﺮاﺣ ﯽ ﻣﺮﺗﺒﻂ ﺑﺎ ﮐﺎﺷﺖ ا ﯾ ﻤﭙﻠﻨﺖ ﻋﺎدل ﭘﯿﺮ ﺟﻤﺎﻟﯽ ﻧﯿﺴﯿﺎﻧﯽ 1 - دﮐﺘﺮ ﻧﯿﻤﺎ ﺟﻤﺸﯿﺪي 2  - دﮐﺘﺮ ﻣﺤﺴﻦ ﺻﺮاف ﺑﯿﺪآﺑﺎد 3 - ﻧﻮﯾﺪ ﺳﻠﻄﺎﻧﯽ 4 1 - ﻣﺤﻘﻖ، ﮐﺎرﺷﻨﺎﺳﯽ ارﺷﺪ ﮔﺮوه آﻣﻮزﺷﯽ ﺑﯿﻮﻣﻮاد، داﻧﺸﮑﺪه ﻓﻨﯽ و ﻣﻬﻨﺪﺳﯽ، داﻧﺸﮕﺎه اﺻﻔﻬﺎن، اﺻﻔﻬﺎن، اﯾﺮان 2 - اﺳﺘﺎدﯾﺎر ﮔﺮوه آﻣﻮزﺷﯽ ﻣﻬﻨﺪﺳﯽ ﭘﺰﺷﮑﯽ، داﻧﺸﮑﺪه ﻓﻨﯽ و ﻣﻬﻨﺪﺳﯽ، داﻧﺸﮕﺎه اﺻﻔﻬﺎن، اﺻﻔﻬﺎن، اﯾﺮان 3 - اﺳﺘﺎدﯾﺎر ﮔﺮوه آﻣﻮزﺷﯽ ﻣﻬﻨﺪﺳﯽ ﭘﺰﺷﮑﯽ، داﻧﺸﮑﺪه ﻓﻨﯽ و ﻣﻬﻨﺪﺳﯽ، داﻧﺸﮕﺎه اﺻﻔﻬﺎن، اﺻﻔﻬﺎن، اﯾﺮان 4 - ﻣﺤﻘﻖ، ﮐﺎرﺷﻨﺎﺳﯽ ارﺷﺪ ﮔﺮوه آﻣﻮزﺷﯽ ﻣﻬﻨﺪﺳﯽ ﭘﺰﺷﮑﯽ ، داﻧﺸﮑﺪه ﻣﻬﻨﺪﺳﯽ ﭘﺰﺷﮑﯽ، داﻧﺸﮕﺎه ﺻﻨﻌﺘﯽ اﻣﯿﺮ ﮐﺒﯿﺮ، ﺗﻬﺮان، اﯾﺮان Thermal numerical assessment of jawbone drilling factor during implantology Adel Pirjamali Neisiani 1 , Nima Jamshidi 2† , Mohsen Saraf Bidabad 3 , Navid Soltani 4 1- Research Associate, Department of Biomedical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran 2 † - Assistant Professor, Department of Biomedical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran (nima_jamshidi@yahoo.com) 3- Assistant Professor, Department of Biomedical Engineering, Faculty of Engineering, University of Isfahan , Isfahan, Iran 4- Research Associate, Department of Biomedical Engineering, School of Biomedical Engineer, Amirkabir University of Technology, Tehran, Iran Background and Aims: Optimization drilling parameters in order to temperature decrease during creation of hole in the bone is an interested issue. The aim of this study was to achieve optimum values of drilling parameters based on the creation of minimum temperature during jawbone drilling. Materials and Methods: In this study two models of mandible and maxilla was created and teeth 2, 5 and 8 from maxilla and teeth 25, 28 and 31 from mandible were removed. The drilling operation was performed under different conditions on jawbone models using finite element analysis and the maximum temperatures were measured in adjacent of holes. Results: Drill bit head angle of 70 degrees was created the lowest maximum temperature during drilling operation. The lowest maximum temperatures were observed in the drill bit rotational speed, drill bit feed rate and the force exerted on the drill bit equal to 200 rpm, 120 mm/min and 60 N, respectively. The use of irrigation can decrease the maximum bone temperature about 7ºC. The maximum temperature differences in various regions of mandible and maxilla were approximately about 1ºC. Conclusion: Sharpness of drill bit head angle, reduction of drill bit rotational speed, increasing drill bit feed rate and exerted force on drill bit and also the use of irrigation played effective roles in temperature decrease during jawbone drilling. Drilling site did not have important effect on the temperature changes during jawbone drilling. Key Words: Mandible, Maxilla, Finite element analysis Journal of Dental Medicine-Tehran University of Medical Sciences 2016;28(4):266-73  ﻣﻮﻟﻒ ﻣﺴﻮول: ﻧﺸﺎﻧﯽ: اﺻﻔﻬﺎن- ﻫﺰار ﺟﺮﯾﺐ- داﻧﺸﮕﺎه اﺻﻔﻬﺎن- داﻧﺸﮑﺪه ﻓﻨﯽ و ﻣﻬﻨﺪﺳﯽ- ﮔﺮوه آﻣﻮزﺷﯽ ﻣﻬﻨﺪﺳﯽ ﭘﺰﺷﮑﯽ ﺗﻠﻔﻦ: 37935613 ﻧﺸﺎﻧﯽ اﻟﮑﺘﺮوﻧﯿﮏ: n.jamshidi@eng.ui.ac.ir Downloaded from jdm.tums.ac.ir at 15:15 IRST on Thursday December 9th 2021