• Title, Summary, Keyword: 임플란트 인상채득

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Three Dimensional Comparative Study On The Accuracy Of Impression Technique Using New Impression Coping (새로운 인상용 코핑을 이용한 임플란트 인상법의 정확성에 대한 3차원적 비교 연구)

  • Kim, Se-Ra;Kim, In-Soo;Park, Sung-Jae;Lee, Byung-Ok;Ko, Sok-Min
    • Journal of Dental Rehabilitation and Applied Science
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    • v.26 no.3
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    • pp.323-337
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    • 2010
  • The objective of this study was to examine the availability of the new impression coping by comparing with conventional coping in implant pick-up impression technique. Five implant fixtures were installed on #14, 21, 23, 25, 27 in acrylic resin model. That model with 5 fixtures was standard model, which was divided 3 groups; using new flag type impression coping, conventional impression coping splinted with self-curing resin, conventional impression coping without splinting. We made metal circular cones for calculation 3-dimensional coordinates by attaching to implant fixtures or analogs. Three-dimensional relationships of each model were calculated. Data was analyzed by multiple ANOVA and Bonferroni. The accuracy of impression between using new flag type impression coping and conventional impression coping did not show differences in 3 - dimensional analysis.Within limitations of this study, the new flag type impression coping is available in implant pick-up impression technique.

Implant impression using closed mouth impression technique: a case report (폐구인상채득법을 이용한 임플란트 인상채득 증례)

  • Kim, So-Yeun;Kim, Joo-Hyeun;Jung, Kyoung-Hwa;Jeon, Hye-Mi;Kang, Eun-Sook;Yun, Mi-Jung
    • Journal of Dental Rehabilitation and Applied Science
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    • v.33 no.3
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    • pp.223-229
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    • 2017
  • Closed mouth impression technique by using bite tray is preferred for single tooth impression taking. However, for implant impression taking, open mouth impression technique by using single arch tray is generally used whether it is for single implant or multiple implant. Closed mouth impression technique by using bite tray can save time and materials. It also decreases the chance of error occurrence when a model is mounted on an articulator. In this case report, we tried to show a satisfying result of fabricating single implant fixed prosthodontics after bite tray impression taking by using two different copings for closed mouth impression.

Digital intraoral impression for immediate provisional restoration of maxillary single implant: A case report (구강 내 디지털 인상채득을 통한 상악 전치부 임플란트 즉시 임시 보철 수복 증례)

  • Chang, Yun-Jeong;Kim, Hong-Jun;Song, Mi-Kyoung;Moon, Ji-Eun;Lee, Hal-La;Park, Chan-Ik
    • The Journal of Korean Academy of Prosthodontics
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    • v.53 no.3
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    • pp.234-243
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    • 2015
  • Developing of digital technique, it is possible to fabricate implant prostheses for edentulous area using intraoral 3-dimentional information throughout implant diagnosis and treatment process. It is being changed that from the method using CAD/CAM, producing prostheses by model scanning after conventional impression and model processing, to the method of fabricating implant provisional restorations and customized abutments by digital impression after connecting digital impression copings (scanbody) and implant fixtures without models. But, this digital method has not been actively used for implant prostheses not yet. Specially, it is short of intraoral digital impression cases for immediate provisional restorations of the maxillary anterior implants. The gingival contour impression of maxillary anterior area is very important for esthetic restorations. Accordingly, in this case report, the using a digital impression coping (scanbody) and digital impression by CEREC Omnicam (Sirona, Bensheim, Germany) or Trios (3shape, Copenhagen, Denmark) were introduced for immediate provisional restorations in 3 cases needed a single implant restoration in maxillary anterior area. The clinical results were satisfactory on the convenience and accuracy of digital impression technique and the good esthetics of final restorations.

A comparative study on the accuracy of impression body according to the types of impression tray (임플란트 인상 채득 시 트레이 종류에 따른 인상체의 정확도에 관한 비교 연구)

  • Yi, Hyun-Jung;Lim, Jong-Hwa;Lee, Joon-Seok
    • The Journal of Korean Academy of Prosthodontics
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    • v.48 no.1
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    • pp.48-54
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    • 2010
  • Purpose: The objective of this study was to evaluate and compare the accuracy of impression body taking by the closed and the open tray impression technique with 3 types of impression tray. Individual tray, metal stock tray and polycarbonate tray were used. Materials and methods: Nine closed tray impressions were taken by individual tray, metal stock tray and polycarbonate stock tray, respectively with polyether impression material. 9 open tray impressions were also acquired by same manner. Precision analysis on the master models was performed by attaching the reference frameworks with alternate single screws and measuring the vertical fit discrepancy of respective analogues in working cast with a stereo microscope. Data were analyzed by 1 way ANOVA and independent t-test. Results: The average fit accuracy of impression bodies was calculated. With the closed tray impression technique, there were significant statistical differences in vertical fit discrepancy according to the types of tray. The individual tray group showed the lowest value and the polycarbonate stock tray group represented the highest. With the open tray impression technique, there was no significant difference in vertical fit discrepancy. Significant statistical difference in vertical fit discrepancy was found between the open and the closed impression technique with the polycarbonate stock tray. Conclusion: From the results above, more precise impressions could be acquired by the rigid individual tray compared with the polycarbonate stock tray. It was hard to get consistent accuracy impressions by the closed tray impression technique with polycarbonate stock trays.

Implant-assisted removable partial denture for severely atrophied mandible (심한 하악 치조제 흡수를 가진 환자에서 임플란트를 이용한 가철성 국소의치로 수복한 증례)

  • Choi, Bada;Kim, Yeun Ju;Lee, Jae Hoon
    • The Journal of Korean Academy of Prosthodontics
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    • v.57 no.2
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    • pp.171-175
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    • 2019
  • Mandible with severe alveolar bone atrophy poses a significant challenge in terms of reproducing clinically acceptable anatomy for a removable prosthesis. To overcome this potential complication, altered cast impression technique is often recommended to capture accurate and functional gingiva tissues. It becomes possible to get proper anchors functional impression by placing 2 implants crowns which were impossible in previous implant overdenture impression technique. In this case, an 80-year old female patient with severe mandibular ridge atrophy was treated with an implant-assisted removable partial denture with two implant crowns on the canine area. An altered cast impression was taken with an individual tray on a metal framework of removable partial denture on both posterior edentulous areas. The patient was satisfied with the final prosthesis after failure of 2 previous prostheses. Clinician had a difficult time to manage disabled patient and patient were suffered with ill-fitting denture due to inaccurate impression in conventional overdenture condition. The oral rehabilitation was completed with placing 2 implants as proper anchor.

The convergence study on the use of dental impression materials (치과용 인상재의 사용 실태에 대한 융합 연구)

  • Jang, Sun-Ok;Choi, Eun-Mi;Kang, Min-Kyung;Shim, Youn-Soo;Cho, Yoon-Jeong;Oh, Sang-Hwan;Choi, Yu-Ri
    • Journal of Digital Convergence
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    • v.16 no.4
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    • pp.195-203
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    • 2018
  • This study was conducted to investigate the types and methods of dental impression materials used in dental clinics in south Korea, the questionnaire was surveyed by a self-administered method for one dentist in a one dental clinic, the collected data were statistically analyzed using SPSS 20. The most frequently used addition silicone impression materials were used in most dental treatment. It was confirmed that the method of taking impression materials having different flow properties(light body and heavy body) was most preferred at one time, also, the implant impression taking method was the most preferred for two rubber impression materials with different flow properties, both direct and indirect. There were statistically significant differences in age and clinical experience between the methods of impression taking of casting restorations and prosthetic according to general characteristics. These results are expected to be helpful for the development of theoretical and practical work based on the basic data for impression material development and research and the preference of impression materials required for dental professional in clinical practice.

Comparison of patient satisfaction with digital and conventional impression for prosthodontic treatment (보철 치료 시 디지털 및 전통적 인상채득에 대한 환자 만족도 비교 연구)

  • Yoon, Hyung-In;Lee, Su-Min;Park, Eun-Jin
    • The Journal of Korean Academy of Prosthodontics
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    • v.54 no.4
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    • pp.379-386
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    • 2016
  • Purpose: The present study aims at researching the subjective satisfaction of patients who have experienced both conventional impression taking and digital impression taking to measure the possibility of wide clinical application of digital impression. Materials and methods: The study surveyed 170 adult patients over the age of 20, between October 2015 and April 2016, who voluntarily consented to participation and who experienced both conventional impression and digital impression at five dental hospitals that use intraoral digital impression. A total of 128 surveys were used for data analysis, involving frequency analysis, multiple response frequency analysis, descriptive statistics, and contingency table analysis, with the significance level set at 0.05. Results: Responses on the reason for taking impressions using the digital method appeared in the order of 'for implant treatment' (43.8%), 'for crown treatment' (30.5%), and 'for inlay treatment' (15.6%). Patients satisfaction was higher for digital impression taking than conventional impression taking (P<.05). As the preferred choice of impression, digital impression (60.2%) was higher than conventional impression (11.7%). Responses on the reason for choosing digital impression taking appeared in the order of 'no vomiting reflex' (35.1%), 'reliability of 3D digital scanning' (33.8%), and 'short time' (33.8%). Conclusion: The patients preferred digital impression taking to conventional impression taking in terms of satisfaction.

Posterior single implant prosthesis using scannable healing abutment (스캔이 가능한 치유지대주를 이용한 구치부 단일 임플란트 수복 증례)

  • Kim, Seong-Min;Lee, Kyu-Bok
    • The Journal of Korean Academy of Prosthodontics
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    • v.57 no.4
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    • pp.432-438
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    • 2019
  • Accurate impression taking for the success of implant prosthesis is a very important process. Methods of taking implant impression include the conventional method using impression coping and impression material, and the digital method using an intraoral scanner and scanbody. However, the impression coping or the scanbody must install after remove healing abutment. Because of this, the dentist must repeat the process of removing and installing the healing abutment, the impression coping or the scanbody several times. In addition, the impression coping or the scanbody rises higher than the occlusal surface, so the patient has the inconvenience of constantly maintaining the open state. Recently, a scannable healing abutment, which can be scanned by a intraoral scanner directly, without the need to remove the healing abutment by applying a scannable part of the scanbody to the healing abutment, was introduced. We present a case of single posterior implant prosthesis using a scannable healing abutment.

Comparison of the accuracy of implant digital impression coping (임플란트 디지털 인상용 코핑의 정확성 비교)

  • Ahn, Gyo-Zin;Lee, Joon-Seok
    • Journal of Dental Rehabilitation and Applied Science
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    • v.36 no.1
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    • pp.29-40
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    • 2020
  • Purpose: The purpose of this study was to compare the accuracy of impression taking method using the encoded healing abutment, scan body and pick-up impression coping with different implant angulations. Materials and Methods: Master model was fabricated by 3D printer and three implants were placed into the model with 0°, 10° and 20° mesial angulation. The abutments were secured to each implants and master model was scanned to make a reference model. Group P model was fabricated using pick-up impression copings and model was scanned after securing the abutments. Encoded healing abutment (Group E) and scan body (Group S) were secured on the master model and digital impression was taken using intraoral scanner 15 times each. Each STL files of test groups were superimposed with reference model using best fit alignment and root mean square (RMS) value was analyzed. Results: The RMS values were lowest in Group P, followed by Group S and Group E. Group P showed significant difference with Group S and E (P < 0.05) while there was no significant difference between Group S and E. Correlation between implant angulation and RMS value was significant in Group E (P < 0.05). Conclusion: The pick-up impression coping method showed higher accuracy and there was no significant difference in accuracy between the healing abutment and the scan body. The clinical use of the encoded healing abutment is possible, but it should be used with caution in the case of angulated implant.

Accuracy of the healing abutment and impression coping combined system on implant impression (인상채득이 가능한 치유지대주를 이용한 임플란트 인상채득의 정확성)

  • Jeon, Kyoung-Bae;Lee, Du-Hyeong;Kim, Jung-Han;Hwang, Jun-Ho;Park, Hyun-We;Lee, Kyu-Bok
    • The Journal of Korean Academy of Prosthodontics
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    • v.53 no.2
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    • pp.105-110
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    • 2015
  • Purpose: The purpose of this study was to evaluate the 3 dimensional accuracy of impression taking on the newly developed healing abutment and impression coping combined system comparing conventional pick-up type impression. Materials and methods: For 10 patients who had a single missing tooth on molar area, dental implants (SuperLine; Dentium, Seoul, Korea) were placed and healing abutment (MyHealing; Raphabio Co., Seoul, Korea) abutments were connected. After 3 months, transfer type impression with MyHealing and pick-up type impression with impression coping were performed twice in the same patients, and master models were fabricated. Customized prosthetic abutments (Myplant; Raphabio Co., Seoul, Korea) were milled and connected to the master casts. Through a dental scanner (Scanner S600; Zirkonzahn, South Tyrol, Italy), the master casts were converted into virtual casts. The length and angulation differences between casts were measured using 3 dimentional analysis program (Geomagic Qualify 12; Geomagic, Morrisville, NC, USA). Statistical significance was calculated using Kruskal Wallis test and Mann-Whitney U test (${\alpha}$=.05). Results: The length differences between the two systems were 0.032 mm in sagittal plane, and 0.029 in coronal plane, and 0.023 mm in horizontal plane. The angulation differences were $0.755^{\circ}$ in sagittal plane, and $1.275^{\circ}$ in coronal plane, and $0.420^{\circ}$ in horizontal plane. Conclusion: The accuracy of newly developed healing abutment system is similar to that of conventional pick-up impression. The new system can reduces chair time by not using separate impression coping.