• Title/Summary/Keyword: Dental restoration

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Short-term improvement of masticatory function after implant restoration

  • Kang, Si-Mook;Lee, Sang-Soo;Kwon, Ho-Keun;Kim, Baek-Il
    • Journal of Periodontal and Implant Science
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    • v.45 no.6
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    • pp.205-209
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    • 2015
  • Purpose: Dental implants present several advantages over other tooth replacement options. However, there has been little research on masticatory function in relation to implant treatment. Therefore, the aim of the present study was to evaluate the improvement of masticatory function two weeks after implant restoration. Methods: Masticatory ability was evaluated with the subjective food intake ability (FIA) and objective mixing ability index (MAI) methods. Fifty-four subjects with first and second missing molars completed the study. The subjects were asked to complete a self-reported questionnaire about 30 different food items, and to chew wax samples 10 times both before and two weeks after implant restoration. A total of 108 waxes were analyzed with an image analysis program. Results: Dental implant restoration for lost molar teeth on one side increased the FIA score by 9.0% (P<0.0001). The MAI score also increased, by 14.3% after implant restoration (P<0.0001). Comparison between the good and poor mastication groups, which were subdivided based on the median MAI score before implant restoration, showed that the FIA score of the poor group was enhanced 1.1-fold while its MAI score was enhanced 2.0-fold two weeks after an implant surgery. Conclusions: Using the FIA and MAI assessment methods, this study showed that masticatory function was improved two weeks after implant restoration. In particular, the enhancement of masticatory function by implant restoration was greater in patients with relatively poor initial mastication than in those with good initial mastication.

Cross mounting technique for successful final restoration (성공적인 최종 보철물 제작을 위한 크로스 마운팅 테크닉)

  • Lim, Jinyoul
    • Journal of the Korean Academy of Esthetic Dentistry
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    • v.30 no.2
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    • pp.44-52
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    • 2021
  • In this article, I would like to introduce the concept, detailed method, and clinical tips of cross mounting technique, which is one of the methods to accurately transmit provisional restoration information to the final restoration.

Effect of Shade on All Ceramic Restoration based Zirconia according to Cooling rate on Firing (도재소성 시 냉각속도가 전부도재관의 색조에 미치는 영향)

  • Jeon, Jin-Hun;Min, Byung-Kuk;Hwang, Jae-Sun;Kim, Woong-Chul
    • Journal of Technologic Dentistry
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    • v.37 no.4
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    • pp.199-203
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    • 2015
  • Purpose: The purpose of this in vitro study was to evaluation the effect of shade on all ceramic restoration based zirconia according to cooling rate on Firing. Methods: 10 specimens applied to the dentin porcelain were made on the zirconia. After 5 specimens of the first group were burned in the furnace, these were put out rapidly. And after 5 specimens of the second group were burned in the furnace, these were put out slowly later 15 min. All specimens were measured $L^*$, $a^*$, $b^*$ using spectrophotometer, there were calculated 10 mean(SD) of descriptive statistics with SPSS program. These data were used for ${\Delta}E^*$ with color difference equation. Independent t tests were performed between 2 groups. Results: $L^*$, $a^*$, $b^*$ of 2 groups was statistically significant respectively (p<0.001), ${\Delta}E^*$ was 4.55 value. Conclusion: This study showed effect of shade on all ceramic restoration based zirconia according to cooling rate on Firing.

Restoration of Rotated and Discolored Maxillary Incisors with a Zirconia All-Ceramic System: A Case Report (지르코니아 완전도재 수복 방법을 사용한 회전되고 변색된 상악중절치의 수복)

  • Baek, Yeon-Wha;Lim, Young-Jun;Kim, Myung-Joo;Kwon, Ho-Beom
    • Journal of Dental Rehabilitation and Applied Science
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    • v.29 no.1
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    • pp.95-101
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    • 2013
  • Recently, the demand for esthetic improvement by a treatment neither time consuming nor invasive is increasing. The patient wanted the maxillary anterior teeth appearance to be improved by prosthetic treatment, not other treatments such as orthodontic, periodontal, and endodontic treatments, despite the limit of esthetic improvement. In this case, among the recent variety of all ceramic systems for the aesthetic prosthetic restoration, we selected the zirconia-based system as a method of restoration in order to conceal the discoloration of teeth. The patient was satisfied with the esthetic results.

Considerations for sound periodontal condition of the esthetic restoration by dental technician (심미보철물의 건강한 치주환경을 위해 치과기공사가 생각해야 할 고려점)

  • Jang, won-pil
    • Journal of the Korean Academy of Esthetic Dentistry
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    • v.28 no.1
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    • pp.42-53
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    • 2019
  • I think the following conditions should be met for a successful anterior aesthetic restorations. They include the patient's facial and dental harmony, the coordination between the tooth and periodontal tissue, and the continuity with the adjacent teeth. However, in the laboratory process of making restorations, the dental technician works on the model without meeting the patient in person, so he or she has to rely on his or her knowledge and skills to make restoration within limited information. In this article, I discuss the biological criteria that I think as a dental technician and the forms of restorations and how to grant them to the sound periodontal condition.

Evaluation of the relation between the pulp stones and direct restorations using cone beam computed tomography in a Turkish subpopulation

  • Guzide Pelin Sezgin ;Sema Sonmez Kaplan;Tuna Kaplan
    • Restorative Dentistry and Endodontics
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    • v.46 no.3
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    • pp.34.1-34.9
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    • 2021
  • Objectives: This study aimed to assess the presence of pulp stones through an examination of cone beam computed tomography images and correlate their prevalence with age, sex, dental arch and side, tooth type, and restoration type and depth. Materials and Methods: Cone beam computed tomography images obtained from 673 patients and archival data on 11,494 teeth were evaluated. The associations of pulp stones with age, sex, dental arch and side, tooth type, and restoration type and depth were noted. All the measurements were subjected to a χ2 test and one sample χ2 test (p < 0.05). Results: In the study group, 163 (24.2%) patients and 379 (3.3%) teeth had at least one pulp stone. The pulp stone frequency in those aged 30-39 years was significantly greater than in those aged 18-29 and ≥ 60 years, and the frequency was higher in females than in males (p < 0.05). The highest prevalence of pulp stones was found in maxillary dental arches and molar teeth (p < 0.05). Pulp stones were significantly more common in medium-depth restorations (p < 0.05). Conclusions: Maxillary molar teeth, medium-depth restorations, individuals aged 30-39 years and females had a greater percentage of pulp stones.

Digital workflow of single visit full contour monolithic zirconia restoration with CEREC Omnicam intraoral scanner and fast zirconia sintering process (구강스캐너와 급속 지르코니아 소결을 이용한 당일 풀지르코니아 보철수복)

  • Lee, Soo Young
    • Journal of the Korean Academy of Esthetic Dentistry
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    • v.25 no.2
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    • pp.79-87
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    • 2016
  • Single visit monolithic restoration can be proceed with digital workflow which consist of intraoral scanning, dental CAD(computer aided design) and restoration milling with CAM(Computer aided manufacturing). While zirconia has more than 900MPa of flexural strength compared with 400MPa for lithium disilicate, shortened fabricating time of lithium disilicate is considered to be a better choice for fabricating single visit full contour monolithic restoration. However, new zirconia materials which are TZI C(Dentsply Sirona) and LUXEN Enamel(Dental Max), new induction heating method of sintering furnace, and new sintering protocols for MoSi2 heating elements sintering furnace offer significantly reduction of full contour monolithic zirconia restoration fabrication time with greater translucency. These new developments lead single visit zirconia restoration in reality.