치아 임플란트에서 이비인후과의 역할

정진혁,김기태,정승규 대한비과학회 2008 Journal of rhinology Vol.15 No.2

In recent years, dental implants have become a frequently performed procedure in most dental clinics. The edentulous posterior maxilla provides a limited amount of bony volume due to atrophy of the alveolar ridge and pneumatization of the maxillary sinus. Consequently, dental implant placement in the posterior maxilla can be complicated and it becomes a matter for the otolaryngology field. However, for most otolaryngologists, knowledge of dental implantation is scarce. Therefore, consensus on the diagnosis and treatment associated with dental implants is needed. During consultation, before a dental implant, a nasal endoscope and paranasal sinus CT scan should be taken and any mucosal thickening, incidental polyps, acute sinusitis, chronic sinusitis, or malignancy should be differentiated and treated as needed. After the dental implant, acute sinusitis and migration of the dental implant into the maxillary sinus can occur because of damage to sinus mucosa or a foreign body reaction. These complications can be evaluated and treated more easily by an otolaryngologist than by a dentist. Nasal endoscopy and endoscopic sinus surgery can be applied to problems associated with dental implants. In recent years, dental implants have become a frequently performed procedure in most dental clinics. The edentulous posterior maxilla provides a limited amount of bony volume due to atrophy of the alveolar ridge and pneumatization of the maxillary sinus. Consequently, dental implant placement in the posterior maxilla can be complicated and it becomes a matter for the otolaryngology field. However, for most otolaryngologists, knowledge of dental implantation is scarce. Therefore, consensus on the diagnosis and treatment associated with dental implants is needed. During consultation, before a dental implant, a nasal endoscope and paranasal sinus CT scan should be taken and any mucosal thickening, incidental polyps, acute sinusitis, chronic sinusitis, or malignancy should be differentiated and treated as needed. After the dental implant, acute sinusitis and migration of the dental implant into the maxillary sinus can occur because of damage to sinus mucosa or a foreign body reaction. These complications can be evaluated and treated more easily by an otolaryngologist than by a dentist. Nasal endoscopy and endoscopic sinus surgery can be applied to problems associated with dental implants.

Current trends in dental implants

Laura Gaviria,John Paul Salcido,Teja Guda,Joo L. Ong 대한구강악안면외과학회 2014 대한구강악안면외과학회지 Vol.40 No.2

Tooth loss is very a very common problem; therefore, the use of dental implants is also a common practice. Although research on dental implant designs, materials and techniques has increased in the past few years and is expected to expand in the future, there is still a lot of work involved in the use of better biomaterials, implant design, surface modification and functionalization of surfaces to improve the long-term outcomes of the treatment. This paper provides a brief history and evolution of dental implants. It also describes the types of implants that have been developed, and the parameters that are presently used in the design of dental implants. Finally, it describes the trends that are employed to improve dental implant surfaces, and current technologies used for the analysis and design of the implants.

치과 임플란트 국민건강보험 급여화 이후 노인의 치과 임플란트 이용에 대한 예측 모형: 사회경제적 요인 중심으로

이상희,김규석,문혜영,강정윤 한국치위생학회 2024 한국치위생학회지 Vol.24 No.1

Objectives: The demand for dental care is expected to increase as the population ages. This study aimed to predict the utilization of dental implant care following the expansion of national health insurance benefits for dental implants. Methods: Multiple linear regression analysis was performed on HIRA big data open portal data and DNN-based artificial intelligence models to forecast the utilization of dental care in relation to the national health insurance coverage for dental implants. Results: National health insurance coverage of dental implants was found to be associated with the number of patients using dental implant services and demonstrated a statistical significance. The dental implant services utilization increased with the increased dental implant health insurance benefits for the elderly population, increased mean by region, increased number of dental institutions by region, and increased health insurance coverage rate for dental implants. However, the dental implant services utilization decreased with the increased number of older people living alone and increased size of dental institutions. Conclusions: With the expansion of the national health insurance coverage for dental implants, it is predicted that the utilization of dental implant medical services will increase in the future.

Comparison of marginal bone loss between internal- and external-connection dental implants in posterior areas without periodontal or peri-implant disease

Kim, Dae-Hyun,Kim, Hyun Ju,Kim, Sungtae,Koo, Ki-Tae,Kim, Tae-Il,Seol, Yang-Jo,Lee, Yong-Moo,Ku, Young,Rhyu, In-Chul Korean Academy of Periodontology 2018 Journal of Periodontal & Implant Science Vol.48 No.2

Purpose: The purpose of this retrospective study with 4-12 years of follow-up was to compare the marginal bone loss (MBL) between external-connection (EC) and internal-connection (IC) dental implants in posterior areas without periodontal or peri-implant disease on the adjacent teeth or implants. Additional factors influencing MBL were also evaluated. Methods: This retrospective study was performed using dental records and radiographic data obtained from patients who had undergone dental implant treatment in the posterior area from March 2006 to March 2007. All the implants that were included had follow-up periods of more than 4 years after loading and satisfied the implant success criteria, without any peri-implant or periodontal disease on the adjacent implants or teeth. They were divided into 2 groups: EC and IC. Subgroup comparisons were conducted according to splinting and the use of cement in the restorations. A statistical analysis was performed using the Mann-Whitney U test for comparisons between 2 groups and the Kruskal-Wallis test for comparisons among more than 2 groups. Results: A total of 355 implants in 170 patients (206 EC and 149 IC) fulfilled the inclusion criteria and were analyzed in this study. The mean MBL was 0.47 mm and 0.15 mm in the EC and IC implants, respectively, which was a statistically significant difference (P<0.001). Comparisons according to splinting (MBL of single implants: 0.34 mm, MBL of splinted implants: 0.31 mm, P=0.676) and cement use (MBL of cemented implants: 0.27 mm, MBL of non-cemented implants: 0.35 mm, P=0.178) showed no statistically significant differences in MBL, regardless of the implant connection type. Conclusions: IC implants showed a more favorable bone response regarding MBL in posterior areas without peri-implantitis or periodontal disease.

식립 보조도구를 이용한 3D 치아 임플란트 시술 시뮬레이션

박형욱(Hyung-Wook Park),김명수(Myong-Soo Kim),박형준(Hyungjun Park) (사)한국CDE학회 2012 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2012 No.2

Surgeon dentists usually rely on their experiential judgments from patients’ oral plaster casts and medical images to determine the positional and directional information of implant fixtures and to perform drilling tasks during dental implant surgical operations. This approach, however, may cause some errors and deteriorate the quality of dental implants. Computer-aided methods have been introduced as supportive tools to alleviate the shortcomings of the conventional approach. In this paper, we present an approach of 3D dental implant simulation which can provide the realistic and immersive experience of dental implant information. The dental implant information is primarily composed of several kinds of 3D mesh models obtained as follows. Firstly, we construct 3D mesh models of jawbones, teeth and nerve curves from the patient’s dental images using software MimicsTM. Secondly, we construct 3D mesh models of gingival regions from the patient’s oral impression using a reverse engineering technique. Thirdly, we select suitable types of implant fixtures from fixture database and determine the positions and directions of the fixtures by using the 3D mesh models and the dental images with software SimplantTM. Fourthly, from the geometric and/or directional information of the jawbones, the gingival regions, the teeth and the fixtures, we construct the 3D models of surgical guide stents which are crucial to perform the drilling operations with ease and accuracy. In the application phase, the dental implant information is combined with the tangible interface device to accomplish 3D dental implant simulation. The user can see and touch the 3D models related with dental implant surgery. Furthermore, the user can experience drilling paths to make holes where fixtures are implanted. A preliminary user study shows that the presented approach can be used to provide dental students with good educational contents. With future work, we expect that it can be utilized for clinical studies of dental implant surgery.

Comparison of marginal bone loss between internal- and externalconnection dental implants in posterior areas without periodontal or peri-implant disease

Dae-Hyun Kim,Hyun Ju Kim,김성태,구기태,Tae-Il Kim,Yang-Jo Seol,Yong-Moo Lee,Young Ku,In-Chul Rhyu 대한치주과학회 2018 Journal of Periodontal & Implant Science Vol.48 No.2

Purpose: The purpose of this retrospective study with 4–12 years of follow-up was to compare the marginal bone loss (MBL) between external-connection (EC) and internal-connection (IC) dental implants in posterior areas without periodontal or peri-implant disease on the adjacent teeth or implants. Additional factors influencing MBL were also evaluated. Methods: This retrospective study was performed using dental records and radiographic data obtained from patients who had undergone dental implant treatment in the posterior area from March 2006 to March 2007. All the implants that were included had follow-up periods of more than 4 years after loading and satisfied the implant success criteria, without any periimplant or periodontal disease on the adjacent implants or teeth. They were divided into 2 groups: EC and IC. Subgroup comparisons were conducted according to splinting and the use of cement in the restorations. A statistical analysis was performed using the Mann-Whitney U test for comparisons between 2 groups and the Kruskal-Wallis test for comparisons among more than 2 groups. Results: A total of 355 implants in 170 patients (206 EC and 149 IC) fulfilled the inclusion criteria and were analyzed in this study. The mean MBL was 0.47 mm and 0.15 mm in the EC and IC implants, respectively, which was a statistically significant difference ( P <0.001). Comparisons according to splinting (MBL of single implants: 0.34 mm, MBL of splinted implants: 0.31 mm, P =0.676) and cement use (MBL of cemented implants: 0.27 mm, MBL of non-cemented implants: 0.35 mm, P =0.178) showed no statistically significant differences in MBL, regardless of the implant connection type. Conclusions: IC implants showed a more favorable bone response regarding MBL in posterior areas without peri-implantitis or periodontal disease.

Recent advances in dental implants

Hong, Do Gia Khang,Oh, Ji-hyeon Korean Association of Maxillofacial Plastic and Re 2017 Maxillofacial Plastic Reconstructive Surgery Vol.39 No.-

Dental implants are a common treatment for the loss of teeth. This paper summarizes current knowledge on implant surfaces, immediate loading versus conventional loading, short implants, sinus lifting, and custom implants using three-dimensional printing. Most of the implant surface modifications showed good osseointegration results. Regarding biomolecular coatings, which have been recently developed and studied, good results were observed in animal experiments. Immediate loading had similar clinical outcomes compared to conventional loading and can be used as a successful treatment because it has the advantage of reducing treatment times and providing early function and aesthetics. Short implants showed similar clinical outcomes compared to standard implants. A variety of sinus augmentation techniques, grafting materials, and alternative techniques, such as tilted implants, zygomatic implants, and short implants, can be used. With the development of new technologies in three-dimension and computer-aided design/computer-aided manufacturing (CAD/CAM) customized implants can be used as an alternative to conventional implant designs. However, there are limitations due to the lack of long-term studies or clinical studies. A long-term clinical trial and a more predictive study are needed.

Design and fabrication of custom-made dental implants

Xianshuai Chen,Longhan Xie,Jianyu Chen,R. Du,Feilong Deng 대한기계학회 2012 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.26 No.7

Dental implant has been attracting more and more attention due to their advantages of reliability and comfort. It is estimated that 10%of people will need dental implants in their life time. Especially, companies offer a system for customer to choice. But, no one research on custom-made dental implants. Traditional implants have their limitation and they are not better fit due to the difference of patient’s oral condition. The advantages of custom implant are accuracy fit and esthetic emergence profile. So, custom-made implant is desirable. Another key problem of custom-made dental implant is manufacturing. Dental implant is difficult to machine due to its complex features and its material (titanium). With the ever increasing demand for tight tolerance and increased complexity and accuracy, traditional machine tools have become ineffective for machining them. So, we design and built a PC-based CNC Turn-Mill-Hob professional machining center for machining our custom-made dental implants accurately and efficiently. This paper introduces our method: firstly, the custom-made dental implant in various oral conditions is designed by using our implant database. And then, FEA results indicate the stress distribution and magnitude of implant-bone interface for dentist referring. Finally, samples are automatic machined by our machining center.

A resonance frequency analysis of sandblasted and acid-etched implants with different diameters: a prospective clinical study during the initial healing period

Kim, Hyun-Joo,Kim, Yeun-Kang,Joo, Ji-Young,Lee, Ju-Youn Korean Academy of Periodontology 2017 Journal of Periodontal & Implant Science Vol.47 No.2

Purpose: The possibility of immediate or early loading has become popular in implant dentistry. A prerequisite for the immediate or early loading of an implant prosthesis is the achievement of initial stability in the implant. Moreover, in response to clinicians' interest in verifying clinical stability to determine the optimal time point for functional loading, a non-invasive method to assess implant stability has been developed on the basis of resonance frequency analysis (RFA). The primary objective of this study was to monitor the stability of sandblasted, large-grit, and acid-etched (SLA) implants with different diameters during the early phases of healing by RFA. The secondary objective was to evaluate how the initial stability of implants varied depending on different surface modifications and other contributing factors. Methods: Thirty-five implants (25 SLA implants and 10 resorbable blasting media [RBM] implants) placed in 20 subjects were included. To measure implant stability, RFA was performed at baseline and at 1, 2, 3, 4, 6, and 10 weeks after surgery. Results: The longitudinal changes in the implant stability quotient (ISQ) values were similar for the SLA implants with different diameters and for the RBM implants. During the initial healing period, the ISQ decreased after installation and reached its lowest values at 1 week and 2 weeks, respectively. The mean ISQ values in the SLA implants were significantly higher in ${\varnothing}5.0mm$ implants than in ${\varnothing}4.0mm$ implants. Men showed a higher ISQ than women. Mandibular sites showed a higher ISQ than maxillary sites. Conclusions: All implants used in this study are suitable for immediate or early loading under appropriate indications. A wider diameter and SLA surface treatment of implants could improve the stability, if the implant is fixed with at least 30 Ncm of insertion torque.

가토의 대퇴골에 이식된 치과용 임프란트 nProtect-447n의 골결합에 대한 연구

김태인,이재일,한준현,김형진 대한치과이식임플란트학회 2001 The Korean Academy of Implant Dentistry Vol.20 No.1

Osseointegrated dental implants are have used for the fixation of dental prosthesis with good long tern clinical results. The unique combination of tapered implant body with screw divided to three parts in Protect-447 dental implant system makes newly designed implant extremely strong initial stability, better stress distribution, less bone reduction during surgical procedure. The purpose of present study was to evaluate histomorphometric examination and removal torque value of newly developed dental implant Protect-447 in the femur of rabbits. After 12 weeks of healing of the implantation, bone contact ratio and bone regeneration rate for histomorphometric examination and removal torque values were compared to evaluate osseointegration properties of Protect-447 dental implant. Obtained results were as follows: 1. Protect-447 dental implants showed 59.8% of bone to implant contact ratio, whereas imported dental implants showed 54.5% (statistically no difference p<0.05). 2. Protect-447 dental implants showed mean bone regeneration rate 63.4%, whereas imported dental implants showed 49.7% (statistically difference p<0.05). 3. Protect-447 dental implants demonstrated mean removal torque values 40.5Ncm, whereas mean removal torque values of imported dental implants showed 39.3Ncm.