Background:
Fixed detachable hybrid prosthesis was the first restorative option using Brånemark implant to reconstruct the edentulous dental arch. This method has been highly successful in mandible and as such, has been recommended by many prosthodontists, especially when the mandibular bone in posterior area was inadequate to place implants. Typically, the framework of fixed detachable hybrid prosthesis was fabricated with Cobalt-Chrome alloy or gold alloy, and the acrylic resin polymerized with the denture teeth on the framework. As with recently arising CAD-CAM technology, it is possible to make the framework with Titanium or Zirconia that can be featured with high level of accuracy and rigidity.
Aim/Hypothesis:
This article describes a method of fixed detachable hybrid prosthesis utilizing CAD-CAM technology for Zirconia framework veneered with porcelain.
Material and Methods:
A 74-year-old female patient presented Prosthodontics Clinic of St. Mary's Hospital with the medical history of coronary stent insertion and long-term anti-platelet agent administration. Her physician in charge authorized invasive dental surgeries including extraction and implant surgery. Examined dental history was the use of mandibular full denture for 5 years and two-implant-retained overdenture for the following 2 years. Although patient wanted to have full-arch fixed implant prosthesis at first, fixed detachable hybrid prosthesis was recommended due to severe bone resorption. Patient approved the suggested treatment plan and the informed consent. Six more implants(Branemark MKIII) were placed as planned with computed tomography, and 3 months of healing period was given. After performing second surgical procedure, temporary prosthesis was fabricated. New vertical dimension was determined by considering the closest speaking space, esthetics. Pattern resin block(Duralay) was used for bite registration. Zirconia framework(Prettau) was fabricated with the copy-milling technology(Zirkonzahn CAD-CAM System). After framework try-in and shade taking, e.max porcelain was veneered on the framework except for the first molar on both sides. Mandibular first molars were covered with gold crown to support the stronger occlusion force than the other region. Mutually protected occlusion relationship was established.
Results:
During 2-year follow-up period, the patient was satisfied with the esthetic and functional results. There have been no porcelain chipping or fracture sign on the prosthesis.
Conclusions and clinical implications:
High level of accuracy and rigidity of the framework was obtained by CAD-CAM method, and satisfactory esthetics was featured by layering the porcelain on the Zirconia framework. Therefore, treatment objective of providing mandibular prosthesis meeting esthetic and functional expectation was achieved.
Background:
Fixed detachable hybrid prosthesis was the first restorative option using Brånemark implant to reconstruct the edentulous dental arch. This method has been highly successful in mandible and as such, has been recommended by many prosthodontists, especially when the mandibular bone in posterior area was inadequate to place implants. Typically, the framework of fixed detachable hybrid prosthesis was fabricated with Cobalt-Chrome alloy or gold alloy, and the acrylic resin polymerized with the denture teeth on the framework. As with recently arising CAD-CAM technology, it is possible to make the framework with Titanium or Zirconia that can be featured with high level of accuracy and rigidity.
Aim/Hypothesis:
This article describes a method of fixed detachable hybrid prosthesis utilizing CAD-CAM technology for Zirconia framework veneered with porcelain.
Material and Methods:
A 74-year-old female patient presented Prosthodontics Clinic of St. Mary's Hospital with the medical history of coronary stent insertion and long-term anti-platelet agent administration. Her physician in charge authorized invasive dental surgeries including extraction and implant surgery. Examined dental history was the use of mandibular full denture for 5 years and two-implant-retained overdenture for the following 2 years. Although patient wanted to have full-arch fixed implant prosthesis at first, fixed detachable hybrid prosthesis was recommended due to severe bone resorption. Patient approved the suggested treatment plan and the informed consent. Six more implants(Branemark MKIII) were placed as planned with computed tomography, and 3 months of healing period was given. After performing second surgical procedure, temporary prosthesis was fabricated. New vertical dimension was determined by considering the closest speaking space, esthetics. Pattern resin block(Duralay) was used for bite registration. Zirconia framework(Prettau) was fabricated with the copy-milling technology(Zirkonzahn CAD-CAM System). After framework try-in and shade taking, e.max porcelain was veneered on the framework except for the first molar on both sides. Mandibular first molars were covered with gold crown to support the stronger occlusion force than the other region. Mutually protected occlusion relationship was established.
Results:
During 2-year follow-up period, the patient was satisfied with the esthetic and functional results. There have been no porcelain chipping or fracture sign on the prosthesis.
Conclusions and clinical implications:
High level of accuracy and rigidity of the framework was obtained by CAD-CAM method, and satisfactory esthetics was featured by layering the porcelain on the Zirconia framework. Therefore, treatment objective of providing mandibular prosthesis meeting esthetic and functional expectation was achieved.
Background:
Fixed detachable hybrid prosthesis was the first restorative option using Brånemark implant to reconstruct the edentulous dental arch. This method has been highly successful in mandible and as such, has been recommended by many prosthodontists, especially when the mandibular bone in posterior area was inadequate to place implants. Typically, the framework of fixed detachable hybrid prosthesis was fabricated with Cobalt-Chrome alloy or gold alloy, and the acrylic resin polymerized with the denture teeth on the framework. As with recently arising CAD-CAM technology, it is possible to make the framework with Titanium or Zirconia that can be featured with high level of accuracy and rigidity.
Aim/Hypothesis:
This article describes a method of fixed detachable hybrid prosthesis utilizing CAD-CAM technology for Zirconia framework veneered with porcelain.
Material and Methods:
A 74-year-old female patient presented Prosthodontics Clinic of St. Mary's Hospital with the medical history of coronary stent insertion and long-term anti-platelet agent administration. Her physician in charge authorized invasive dental surgeries including extraction and implant surgery. Examined dental history was the use of mandibular full denture for 5 years and two-implant-retained overdenture for the following 2 years. Although patient wanted to have full-arch fixed implant prosthesis at first, fixed detachable hybrid prosthesis was recommended due to severe bone resorption. Patient approved the suggested treatment plan and the informed consent. Six more implants(Branemark MKIII) were placed as planned with computed tomography, and 3 months of healing period was given. After performing second surgical procedure, temporary prosthesis was fabricated. New vertical dimension was determined by considering the closest speaking space, esthetics. Pattern resin block(Duralay) was used for bite registration. Zirconia framework(Prettau) was fabricated with the copy-milling technology(Zirkonzahn CAD-CAM System). After framework try-in and shade taking, e.max porcelain was veneered on the framework except for the first molar on both sides. Mandibular first molars were covered with gold crown to support the stronger occlusion force than the other region. Mutually protected occlusion relationship was established.
Results:
During 2-year follow-up period, the patient was satisfied with the esthetic and functional results. There have been no porcelain chipping or fracture sign on the prosthesis.
Conclusions and clinical implications:
High level of accuracy and rigidity of the framework was obtained by CAD-CAM method, and satisfactory esthetics was featured by layering the porcelain on the Zirconia framework. Therefore, treatment objective of providing mandibular prosthesis meeting esthetic and functional expectation was achieved.
Background:
Fixed detachable hybrid prosthesis was the first restorative option using Brånemark implant to reconstruct the edentulous dental arch. This method has been highly successful in mandible and as such, has been recommended by many prosthodontists, especially when the mandibular bone in posterior area was inadequate to place implants. Typically, the framework of fixed detachable hybrid prosthesis was fabricated with Cobalt-Chrome alloy or gold alloy, and the acrylic resin polymerized with the denture teeth on the framework. As with recently arising CAD-CAM technology, it is possible to make the framework with Titanium or Zirconia that can be featured with high level of accuracy and rigidity.
Aim/Hypothesis:
This article describes a method of fixed detachable hybrid prosthesis utilizing CAD-CAM technology for Zirconia framework veneered with porcelain.
Material and Methods:
A 74-year-old female patient presented Prosthodontics Clinic of St. Mary's Hospital with the medical history of coronary stent insertion and long-term anti-platelet agent administration. Her physician in charge authorized invasive dental surgeries including extraction and implant surgery. Examined dental history was the use of mandibular full denture for 5 years and two-implant-retained overdenture for the following 2 years. Although patient wanted to have full-arch fixed implant prosthesis at first, fixed detachable hybrid prosthesis was recommended due to severe bone resorption. Patient approved the suggested treatment plan and the informed consent. Six more implants(Branemark MKIII) were placed as planned with computed tomography, and 3 months of healing period was given. After performing second surgical procedure, temporary prosthesis was fabricated. New vertical dimension was determined by considering the closest speaking space, esthetics. Pattern resin block(Duralay) was used for bite registration. Zirconia framework(Prettau) was fabricated with the copy-milling technology(Zirkonzahn CAD-CAM System). After framework try-in and shade taking, e.max porcelain was veneered on the framework except for the first molar on both sides. Mandibular first molars were covered with gold crown to support the stronger occlusion force than the other region. Mutually protected occlusion relationship was established.
Results:
During 2-year follow-up period, the patient was satisfied with the esthetic and functional results. There have been no porcelain chipping or fracture sign on the prosthesis.
Conclusions and clinical implications:
High level of accuracy and rigidity of the framework was obtained by CAD-CAM method, and satisfactory esthetics was featured by layering the porcelain on the Zirconia framework. Therefore, treatment objective of providing mandibular prosthesis meeting esthetic and functional expectation was achieved.