The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
권호 표지
DOI QR코드

DOI QR Code

Maxillary complete denture and mandibular fixed prosthesis restoration using CBCT based facebow transfer: a case report

CBCT를 기반으로 안궁이전을 시행한 상악 총의치 및 하악 고정성 보철 수복 증례

  • JinYoung Chon (Department of Prosthodontics, Kyung Hee University Dental Hospital at Gangdong) ;
  • Su-Jin Ahn (Department of Prosthodontics, Kyung Hee University Dental Hospital at Gangdong) ;
  • Suk Won Lee (Department of Prosthodontics, Kyung Hee University Dental Hospital at Gangdong)
  • 전진영 (강동경희대학교치과병원 치과보철과) ;
  • 안수진 (강동경희대학교치과병원 치과보철과) ;
  • 이석원 (강동경희대학교치과병원 치과보철과)
  • Received : 2024.06.04
  • Accepted : 2024.08.05
  • Published : 2024.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

With the increasing use of CAD-CAM (computer-aided design-computer-aided manufacturing) methods for prosthesis fabrication, utilization of virtual articulators in CAD software has also increased. Among the various methods of positioning the maxilla in a virtual articulator, there are techniques that utilize CBCT (cone-beam computed tomography) or facial scans without the use of a facebow. In this case, a full-mouth rehabilitation was planned for a patient who exhibited multiple crown fractures and occlusal plane disharmony through maxillary complete denture and mandibular fixed prosthetic restoration. Radiopaque markers were added to the duplicated maxillary temporary denture to take closed-mouth impression, which was then scanned and positioned on the CBCT. On CBCT, hinge axis connecting the medial poles of both mandibular condyles along with the Frankfort horizontal plane was designated and utilized to perform virtual articulator mounting. Maxillary complete denture and mandibular fixed prostheses were fabricated, resulting in satisfactory aesthetic and functional outcomes.

최근 CAD-CAM (computer-aided design-computer-aided manufacturing) 방식의 보철물의 제작이 늘어남에 따라 CAD 소프트웨어 내 가상 교합기의 이용도 증가하고 있다. 가상 교합기에 상악을 위치시키는 다양한 방법 중에는 안궁을 이용하지 않고 CBCT (cone-beam computed tomography) 혹은 안면 스캔을 이용하는 방법이 존재한다. 본 증례에서는 다수의 치관 파절과 교합 평면의 부조화가 관찰된 환자에게 상악 총의치 및 하악 고정성 보철 수복을 통한 전악 구강 회복을 계획하였다. 복제한 상악 임시의치에 방사선 불투과성 마커를 부여하여 폐구 인상을 채득하고, 이를 스캔하여 CBCT 상에서 위치시켰다. CBCT 상에서 양측 하악 과두의 medial pole을 잇는 접번축과 Frankfort horizontal plane을 지정하고 이를 활용하여 가상 교합기 부착을 시행하였다. 상악 총의치 및 하악 고정성 보철물을 제작하였으며, 심미적이며 기능적으로 만족스러운 결과를 얻었기에 이를 보고하는 바이다.

Keywords

References

  1. Lepidi L, Galli M, Mastrangelo F, Venezia P, Joda T, Wang HL, Li J. Virtual articulators and virtual mounting procedures: where do we stand? J Prosthodont 2021;30:24-35. 
  2. The glossary of prosthodontic terms: ninth edition. J Prosthet Dent 2017;117:e1-105. 
  3. Ury E, Fornai C, Weber GW. Accuracy of transferring analog dental casts to a virtual articulator. J Prosthet Dent 2020;123:305-13. 
  4. Kim SJ, Kang YJ, Kim JH. Comparison of the accuracy of a cone beam computed tomography-based virtual mounting technique with that of the conventional mounting technique using a facebow. J Prosthet Dent 2023:S0022-3913(23)00570-X. 
  5. Ulrich J. The human temporomandibular joint: Kinematics and actions of the masticatory muscles. J Prosthet Dent 1959;9:399-406. 
  6. Winstanley RB. The hinge-axis: a review of the literature. J Oral Rehabil 1985;12:135-59. 
  7. Shafiullah RS, Ravichandran M, Sundar MK, Kamakshi V. Posterior reference points: a simplified classification. J Sci Dent 2019;9:9-12. 
  8. Lepidi L, Chen Z, Ravida A, Lan T, Wang HL, Li J. A full-digital technique to mount a maxillary arch scan on a virtual articulator. J Prosthodont 2019;28:335-8. 
  9. Lin H, Pan Y, Wei X, Wang Y, Yu H, Cheng H. Comparison of the performance of various virtual articulator mounting procedures: a self-controlled clinical study. Clin Oral Investig 2023;27:4017-28. 
  10. Park JH, Lee GH, Moon DN, Kim JC, Park M, Lee KM. A digital approach to the evaluation of mandibular position by using a virtual articulator. J Prosthet Dent 2021;125:849-53. 
  11. Joda T, Bragger U, Gallucci G. Systematic literature review of digital three-dimensional superimposition techniques to create virtual dental patients. Int J Oral Maxillofac Implants 2015;30:330-7. 
  12. Scherer MD, Roh HK. Radiopaque dental impression method for radiographic interpretation, digital alignment, and surgical guide fabrication for dental implant placement. J Prosthet Dent 2015;113:343-6. 
  13. Li J, Sommer C, Wang HL, Lepidi L, Joda T, Mendonca G. Creating a virtual patient for completely edentulous computer-aided implant surgery: a dental technique. J Prosthet Dent 2021;125:564-8. 
  14. Moura GF, Siqueira R, Meirelles L, Maska B, Wang HL, Mendonca G. Denture scanning technique for computer-guided implant-supported restoration treatment of edentulous patients. J Prosthet Dent 2021;125:726-31. 
  15. Kim JE, Kim SJ, Kwon DH, Shim JS, Kim JH. Mounting casts on a mechanical articulator by using digital multisource data: a dental technique. J Prosthet Dent 2021;125:41-5. 
  16. Yang S, Dong B, Zhang Q, Li J, Yuan Q, Yue L. An indirect digital technique to transfer 3D printed casts to a mechanical articulator with individual sagittal condylar inclination settings using CBCT and intraoral scans. J Prosthodont 2022;31:822-7. 
  17. Maveli TC, Suprono MS, Kattadiyil MT, Goodacre CJ, Bahjri K. In vitro comparison of the maxillary occlusal plane orientation obtained with five facebow systems. J Prosthet Dent 2015;114:566-73. 
  18. Bowley JF, Michaels GC, Lai TW, Lin PP. Reliability of a facebow transfer procedure. J Prosthet Dent 1992;67:491-8. 
  19. Woo HW, Mai HN, Lee DH. Comparison of the accuracy of image registration methods for merging optical scan and radiographic data in edentulous jaws. J Prosthodont 2020;29:707-11. 
  20. Bohner L, Gamba DD, Hanisch M, Marcio BS, Tortamano Neto P, Lagana DC, Sesma N. Accuracy of digital technologies for the scanning of facial, skeletal, and intraoral tissues: a systematic review. J Prosthet Dent 2019;121:246-51. 
  21. Vitai V, Nemeth A, Solyom E, Czumbel LM, Szabo B, Fazekas R, Gerber G, Hegyi P, Hermann P, Borbely J. Evaluation of the accuracy of intraoral scanners for complete-arch scanning: a systematic review and network meta-analysis. J Dent 2023;137:104636. 
  22. Rutkunas V, Geciauskaite A, Jegelevicius D, Vaitiekunas M. Accuracy of digital implant impressions with intraoral scanners. A systematic review. Eur J Oral Implantol 2017;10 Suppl 1:101-20. 
  23. Im SM, Huh YH, Cho LR, Park CJ. Comparison of the fracture resistances of glass fiber mesh- and metal mesh-reinforced maxillary complete denture under dynamic fatigue loading. J Adv Prosthodont 2017;9:22-30. 
  24. Piao XY, Shim JS, Park JM. Fabrication of metal-reinforced complete dentures using the CAD-CAM technique. Appl Sci 2021;11:7369.