• Title/Summary/Keyword: IARPD

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Full mouth rehabilitation of a partially edentulous patient with crossed occlusion using implant-retained RPD with zirconia occlusal table (엇갈린 교합을 가진 부분 무치악 환자에서 지르코니아 교합면을 가지는 Implant-Retained RPD 이용한 전악 수복 증례)

  • Kwon, Tae-Min;Seo, Chi-Won;Kim, Kyung-A;Ahn, Seung-Geun;Seo, Jae-Min
    • Journal of Dental Rehabilitation and Applied Science
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    • v.32 no.4
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    • pp.314-321
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    • 2016
  • Conventional removable partial dentures (RPDs) with distal extensions are associated with some problems, including lack of stability that calls for frequent relining, and cantilever actions of claps that can produce excessive loading to abutment teeth, and the need for unesthetic retentive arm clasps. Therefore, IARPDs (Implant-assisted RPD) that use implants to support or retain RPDs has been reported to improve stability, esthetics and masticatory performance of RPDs. Also, an IARPD that has zirconia occlusal table can prevent the incongruity of occlusal plane and the extrusion of antagonistic tooth. In this case of partially edentulous patient with crossed occlusion, each edentulous area was restored with implant fixed prosthesis and implant retained partial denture to suit each situation. Through the procedure, satisfactory outcomes were achieved both in functional and esthetic aspects.

Survival rate and clinical evaluation of the implants in implant assisted removable partial dentures: surveyed crown and overdenture

  • Kang, Soo-Hyun;Kim, Seong-Kyun;Heo, Seong-Joo;Koak, Jai-Young
    • The Journal of Advanced Prosthodontics
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    • v.12 no.4
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    • pp.239-249
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    • 2020
  • PURPOSE. The purpose of this study was to investigate survival rates of the implants used in implant assisted removable partial dentures (IARPDs). MATERIALS AND METHODS. The study was conducted on 21 patients who were treated with IARPDs. The mean follow-up period for IARPD patients ranged from 12 to 185 months (mean 47.9 months). A total of 58 implants were used for IARPDs in two different modalities: 41 for surveyed crowns and 17 for overdentures. The survival of implants was determined by clinical and radiographic evaluations considering relevant factors: location, RPD classification, opposing dentition, splinting, and implant diameter. RESULTS. The survival rate of total 58 implants was 93.1%: 95.1% for implants supporting surveyed crowns and 88.2% for implants used in overdentures. Considering only the implants supporting surveyed crown, regular diameter implants showed a higher survival rate than narrow or wide diameter implants. CONCLUSION. The survival rate of the implants used in IARPDs was 93.1% (surveyed crown: 95.1%, overdenture: 88.2%).

Implant assisted removable partial denture with implant surveyed prostheses: A 9-year follow-up (임플란트 서베이드 보철물을 이용한 임플란트 보조 국소의치의 9년 경과 관찰 증례)

  • Lee, Jae-Rim;Yoon, Hyung-In;Kim, Hee-Sun;Sim, Hye-Young;Han, Yoon-Sic
    • The Journal of Korean Academy of Prosthodontics
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    • v.60 no.2
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    • pp.211-221
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    • 2022
  • Implant placement may be restricted by anatomical and/or financial limitations in restoring a completely edentulous arch, or the patients' unwillingness to have extensive surgical procedures. Implant assisted removable partial dentures (IARPD) in combination with anterior fixed implant prostheses can be proposed as an alternative treatment option for the restoration of a completely edentulous arch. In this case, a 56-year-old female patient who has a fully edentulous maxilla opposed by partially edentulous mandible was treated. The treatment option for the maxilla consisted of an implant-assisted removable partial denture supported by four anterior fixed implant prostheses. The mandible was restored with 8 anterior fixed partial dentures and posterior fixed implant-supported prostheses. Long-term follow-up and supportive periodontal treatment were performed for 9 years, and the patient was satisfied with the overall appearance as well as masticatory function.

Implant assisted removable partial denture with implant surveyed crown: A 20-month follow-up case report (단일 임플란트 서베이드 크라운을 이용한 하악 임플란트 융합 국소의치: 20 개월 경과 관찰 증례 보고)

  • Roh, Kyoung-Woo;Jeon, Young-Chan;Jeong, Chang-Mo;Yoon, Mi-Jung;Lee, So-Hyoun;Huh, Jung-Bo
    • The Journal of Korean Academy of Prosthodontics
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    • v.56 no.4
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    • pp.323-329
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    • 2018
  • Traditional options for posterior edentulous treatment include removable partial dentures and implant fixed prostheses. Recently, the concept of implant assisted removable partial denture, in which two treatments are fused, has been introduced in consideration of systemic health and patient's needs, costs, residual alveolar bone status and so on. Implant assisted removable partial denture has the advantage of increasing the retention and stability of the denture and improving its esthetics in cases of large bone defects or biomechanical disadvantages. In addition, it is possible to strategically place the implants in a site where the alveolar bone is relatively sufficient, thereby overcome the limit of the conventional removable partial denture design as well as reducing the burden on a wide range of implant surgery. Cost reduction is also expected. In this case, the patient was treated by placing the implant in both premolar sites of the mandible and fabricating the distal extension removable partial denture with the implant fixed prosthesis as an abutment. After delivering the definitive prosthesis, the patient showed satisfaction with the masticatory function and esthetics. and has been regularly followed-up for more than one year. The following 20-months follow-up case report describes the design of an implant-assisted-removable partial denture (IARPD) in which two cementretained implant crowns used to provide support and stability.

Implant-assisted removable partial denture using freely removable abutment in a fully edentulous patient: A case report (완전 무치악 환자에서 자유 착탈가능 임플란트 지대주를 이용한 임플란트 융합 국소의치 수복증례)

  • Oh, You-Kyoung;Jeong, Chang-Mo;Yun, Mi-Jung;Lee, So-Hyoun;Lee, Hyeon-Jong;Huh, Jung-Bo
    • The Journal of Korean Academy of Prosthodontics
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    • v.58 no.1
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    • pp.58-66
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    • 2020
  • Implant-Assisted Removable Partial Dentures (IARPDs) treatment is being performed in a fully edentulous patient using implant surveyed prosthesis as an abutment. Implant-supported prosthesis as an abutment of IARPDs is classified into screw-retained and cement-retained type according to the retention type, and each has advantages and disadvantages. The EZ crown system (Samwon DMP, Yangsan, Korea) has a cylinder combined with abutment, and the nickel-titanium spring in this cylinder provides a constant force on the zirconia ball to obtain retention in EZ crown system. In this patient, the natural abutment teeth of the mandibular overdenture was hopeless. We planned implant assisted removable partial denture using anterior implant surveyed prosthesis considering functional and esthetical rehabilitation, cost and patient's needs. When fabricating IARPDs using implant as abutment, we could compensate for the shortcomings of existing implant-supported prosthesis retention type and made the design of removable partial denture easy due to using EZ crown system.

Three-year follow-up of full mouth rehabilitation with anterior implant surveyed bridges and distal extension removable partial denture (전방 임플란트 써베이드 고정성 보철물과 후방연장 국소의치를 이용한 전악 보철 치료의 3년 경과 관찰 증례)

  • Gil, Ki-Sung;Yi, Hyo-Gyoung;Kim, Kyoung-A;Lee, Jung-Jin;Seo, Jae-Min
    • The Journal of Korean Academy of Prosthodontics
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    • v.56 no.3
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    • pp.218-226
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    • 2018
  • In partial edentulous patients, implant-assisted removable partial denture which provide additional retention and support by placing a small number of implants in strategic positions might be suitable treatment. This case of patient with loss of maxillary posterior teeth and moderate to severe wear of residual dentition, three implants were placed in the maxillary anterior edentulous area and then surveyed bridges were made including remaining anterior natural teeth. Posterior edentulous area was restored with distal extension removable partial denture (RPD). In addition, the worn mandibular natural teeth were restored with fixed prostheses. As a result, reduced vertical dimension and collapsed occlusal plane were rehabilitated, and improved functionally and aesthetically. The purpose of this case was to report the results of three-year follow-up of full mouth rehabilitation with anterior implant surveyed bridges and distal extension RPD.

Influence of the length and location of implants on distal extension removable partial dentures: finite element analysis (후방연장 가철성 국소의치에서 임플란트의 길이와 위치가 응력분산에 미치는 영향)

  • Kim, Jin-Hee;Cho, Jin-Hyun;Lee, Cheong-Hee
    • Journal of Dental Rehabilitation and Applied Science
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    • v.31 no.3
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    • pp.186-194
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    • 2015
  • Purpose: To evaluate the effects of implant location and length on stress distribution and displacement in osseointegrated-implants that were associated with mandibular distal extension removable partial dentures (DERPD). Materials and Methods: A sagittally cut model with the #33, #34 teeth and a removable partial denture of the left mandible was used. Seven models were designed with NX 9.0. Models A, B, C had implants with lengths of 11, 6, 4 mm, respectively, under the denture base of the #37 artificial tooth. Models D, E, F had implants with lengths of 11, 6, 4 mm, respectively, under the denture base of the #36 artificial tooth. Model G did not have any implants. Axial force (250 N) was loaded on #36 central fossa. The finite element analysis was performed with MSC Nastran. Von Mises stress maps were plotted to visualize the results. Results: The models of #37 implant placement showed much lower stress concentration on the surrounding bone of the implant compared with #36. The #36 implant position tended to reduce displacement more than #37. Conclusion: When an IARPD is designed, the distal positioning of implant placement has more advantages in the edentulous bone of DERPD on the prognosis of short implants and the stress distribution of edentulous alveolar bone. Using implants with longer lengths are important for stress distribution. However, Additional studies are necessary of the effects of length on implant survival.

Implant assisted removable partial denture using bilateral single implant-supported surveyed crown: a case report (양측성 단일 임플란트 지지 서베이드 크라운을 이용한 하악 임플 란트 보조 국소의치 수복 증례)

  • Seojune Choi;Hong Seok Moon;Jaeyoung Kim
    • The Journal of Korean Academy of Prosthodontics
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    • v.62 no.2
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    • pp.146-156
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    • 2024
  • Implant assisted removable partial denture (IARPD) has been practiced in various forms for a long time, and among them, implant surveyed crown RPD is gaining predictability as well as being considered as a treatment option for patients with anatomical and financial disadvantages. The position of implant could be divided as posterior placement or anterior placement according to the purpose of the treatment and should be planned in consider to the alveolar ridge of patient, anticipated prognosis of remaining teeth, and opposing dentition. This case report describes a treatment for mandibular Kennedy class I partial edentulous patient with two implant-supported surveyed crown and implant assisted removable partial denture. Given the difficulty of posterior placement in this patient and the prognosis of the residual teeth, the plan was to place two implants in close proximity to the residual teeth, which were placed in the planned position, angle, and depth using guided surgery. The process of fabricating the fixed prosthesis was carried out in parallel with the maxillary edentulous tooth arrangement process to increase predictability, and when fabricating the localized tooth, the implant was designed in a form that allows the patient to perform functional movements by preventing excessive loading as the last supporting tooth, and was fabricated through a secondary impression process. Each treatment procedure was proceeded as planned, with aesthetically and functionally satisfactory results for both patient and operator.