$Bio-pin^{(R)}$을 이용한 고정성 보철물의 탈락저항강도의 비교연구

이종원,조인호,이종혁,김승기,Yi Jong-Won,Cho In-Ho,Lee Jong-Hyuk,Kim Seung-Ki 대한치과보철학회 2005 대한치과보철학회지 Vol.43 No.2

Statement of problem. The current trend in prosthodontics is the adoption of a conservative approach to preparing dental prostheses by minimizing the amount of sound tooth structure removal during preparation. Purpose. The major disadvantage of the adhesion bridge is the inherently poor resistance to dislodgement that its use in areas subjected to high occlusal load is limited. The purpose of this study was to compare the dislodgement resistance of $Bio-pin^{(R)}$, conventional 3-unit and adhesion bridges. Material and methods. The experimental groups were classified as follows : Group I : 3-unit bridge cemented using $Super-Bond^{(R)}$ C&B Group II : Adhesion bridge cemented using $Super-Bond^{(R)}$ C&B Group III : $Bio-pin^{(R)}$ design adhesion bridge without incorporation of $Bio-pin^{(R)}$ (cemented using $Super-Bond^{(R)}$ C&B) Group IV-1 : $Bio-pin^{(R)}$ retained adhesion bridge incorporating a single $Bio-pin^{(R)}$ (cemented using $Super-Bond^{(R)}$ C&B) Group IV-2 : $Bio-pin^{(R)}$ retained adhesion bridge incorporating a single $Bio-pin^{(R)}$ (cemented using $Panavia^{(R)}$ F) Group V : $Bio-pin^{(R)}$ retained adhesion bridge incorporating two $Bio-pins^{(R)}$ (cemented using $Super-Bond^{(R)}$ C&B) Results. The results of this study were as follows : 1. Significant differences in dislodgement resistance of the restorations were found between Group I, Group II and Group III (p<0.05). No significant differences in dislodgement resistance of the restorations were observed between Group I Group IV-1 and Group V. However, there were significant differences in dislodgement resistance between Group II and the other groups (p<0.05). 2. No significant differences in dislodgement resistance of the restorations were observed between GroupIV-1 and GroupIV-2, both of which utilized a single $Bio-pin^{(R)}$. However, significant differences were observed when Group III was compared to either GroupIV-1 or Group V (p<0.05). 3. No significant differences in dislodgement resistance relative to the type of dental cements used were found. Conclusion. From the above results, it is concluded that the dislodgement resistance of $Bio-pin^{(R)}$ bridge restorations utilizing a single $Bio-pin^{(R)}$ is similar to that of a conventional 3-unit bridge. The results also suggest that $Bio-pin^{(R)}$ bridge restorations using a single $Bio-pin^{(R)}$ are a viable alternative to the conventional 3-unit bridge when minimal removal of sound tooth structure and fulfillment of both function and esthetic aspects are considered.

Dislodgement resistance of modified resin-bonded fixed partial dentures utilizing tooth undercuts : an in vitro study

Doh, Re-Mee,Lee, Keun-Woo 대한치과보철학회 2009 The Journal of Advanced Prosthodontics Vol.1 No.2

STATEMENT OF PROBLEM. Over the years, resin-bonded fixed partial dentures (RBFPDs) have gone through substantial development and refinement. Several studies examined the biomechanics of tooth preparation and framework design in relation to the success rate of RBFPDs and considered retention and resistance form essential for increase of clinical retention. However, these criteria required preparations to be more invasive, which violates not only the original intentions of the RBFPD, but may also have an adverse effect on retention due to loss of enamel, an important factor in bonding. PURPOSE. The object of this in vitro study was to compare the dislodgement resistance of the new types of RBFPDs, the conventional three-unit fixed partial denture, and conventional design of RBFPD (Maryland bridge). MATERIAL AND METHODS. Fifty resin mandibular left second premolars and second molars were prepared on dentiforms, according to the RBFPD design. After model fabrication (five group, n = 10), prostheses were fabricated and cemented with zinc phosphate cement. After cementation, the specimens were subjected to tensile loading at a cross head speed of 4 mm/min in a universal testing machine. The separation load was recorded and analyzed statistically using one-way analysis of variance followed by Duncan's multiple range test. RESULTS. Group Ⅴ, the pin-retained RBFPDs had the highest mean dislodgement resistance, whereas specimens of group Ⅱ, the conventional RBFPDs, exhibited a significantly lower mean dislodgement resistance compared to the other 4 groups (P<.05). There were no significant differences between group Ⅰ, Ⅲ, and Ⅳ in terms of dislodgement resistance (P>.05). Group V had the highest mean MPa (N/mm²) (P<.05). There was no significant difference between groups Ⅰ, Ⅱ, Ⅲ and Ⅳ (P>.05). CONCLUSION. Within the limits of the design of this in vitro study, it was concluded that: 1. The modified RBFPDs which utilizes the original tooth undercuts and requires no tooth preparation, compared with the conventional design of RBFPDs, has significantly high dislodgement resistance (P<.05). 2. The modified RBFPDs which utilizes the original tooth undercuts and requires minimal tooth preparation, compared with the conventional FPDs, has significantly no difference in retention and dislodgement resistance)(P>.05). 3. The pin-retained FPDs showed a high dislodgement resistance compared to the conventional three-unit FPDs (P<.05).

CASE REPORT : Two dislodged and crushed coronary stents: treatment of two simultaneously dislodged stents using crushing techniques

( Dong Hyeok Yang ),( Seong Ill Woo ),( Dae Hyeok Kim ),( Sang Don Park ),( Ji Hun Jang ),( Jun Kwan ),( Sung Hee Shin ) 대한내과학회 2013 The Korean Journal of Internal Medicine Vol.28 No.6

Coronary stent dislodgement is a rare complication of percutaneous coronary intervention. We report a rare case of dislodgement of two intracoronary stents. On withdrawal of two balloon catheters, one with a guide wire was mechanically distorted from the left main (LM) to the proximal left anterior descending artery (LAD) while the other was dislodged from the LM to the ostial left circumflex ar-tery. The stent in the LAD could not be retrieved into the guide catheter using a Goose neck snare, because it was caught on a previously deployed stent at the mid LAD. A new stent was quickly deployed from the LM to the proximal LAD, be-cause the patient developed cardiogenic shock. Both stents, including a distorted and elongated stent, were crushed to the LM wall. Stent deployment and crushing may be a good alternative technique to retrieving a dislodged stent.

이탈된 위루관에 대한 투시경하 변형 Seldinger씨 방법을 이용한 경피적 위루관 재삽입술

김주희,김성민,오정탁,최승훈,황의호,한석주,Kim, Joo-Hee,Kim, Seong-Min,Oh, Jung-Tak,Choi, Seung-Hoon,Hwang, Eu-Ho,Han, Seok-Joo 대한소아외과학회 2006 소아외과 Vol.12 No.2

This case report describes a baby who received a laparoscopic gastrostomy tube insertion, which was dislodged accidentally at $16^{th}$ postoperative day. After the dislodgement, cutaneous tract rapidly closed, and reinsertion seemed to be impossible. However, gastrostomy tube was reinserted safely with fluoroscopy-guided Seldinger's technique under local anesthesia with sedation. This is the unique method of modified Seldinger's technique for reinsertion of gastrostomy tube under local anesthesia and sedation for accidentally dislodged gastrostomy tube. This method was thought to be safe, easy and useful technique for gastrostomy reinsertion after dislodgement of gastrostomy tube.

Successful coronary stent retrieval from the ascending aorta using a gooseneck snare kit

장지훈,우성일,양동혁,박상돈,김대혁,신성희 대한내과학회 2013 The Korean Journal of Internal Medicine Vol.28 No.4

Coronary stent dislodgement is a rare complication of percutaneous coronary intervention. We report a case of stent dislodgement in the ascending thoracic aorta. The stent was mechanically distorted in the left circumflex artery (LCX) while being delivered to the proximal LCX lesion. The balloon catheter was withdrawn, but the stent with the guide wire was remained in the ascending thoracic aorta. The stent was unable to be retrieved into the guide catheter, as it was distorted. A goose neck snare was used successfully to catch the stent in the ascending thoracic aorta and retrieved the stent externally via the arterial sheath.

계속적 외래복막투석에서 도관기능부전시 도관제거에 앞서 도관기능 회복을 위한 처치

방종효(Jong Hyoo Bang),김준홍(Jun Hong Kim),조성(Seong Cho),권태환(Tae Hwan Kwon),김용림(Yong Lim Kim),조동규(Dong Kyu Cho) 대한내과학회 1996 대한내과학회지 Vol.50 No.4

N/A Objectives: The peritonitis and peritoneal catheter malfunction remained as two major causes for the failure of chronic peritoneal dialysis. Extensive quantitative data on the nonoperative technique alternative to surgical placement of a new catheter in catheter malfunction due to dislodgment and obstruction are not available. Methods: From January 1991 through February 1993, thirteen fluoroscopy guided brushings and twelve laparoscopy guided manipulations were performed for 15 adult patients with catheter malfunction due to dislodgment and obstruction in an effort to prolong catheter life. Results : 1) The causes of catheter malfunction were four omental wrapping with secondary migration, four obstruction by fibrin deposits or blood clots, and seven dislodgment and obstruction. 2) With fluoroscopy guided brushing and/or laparoscopy manipulation, catheter malfunction were restored in 11 patients(73%). Among 11 patients, catheter malfunction were restored in 4 patients with fluoroscopy guided brushing, 4 patients with laparoscopic manipulation, and 3 patients with combination of two procedures. However, the remaining four patients, even after repeated manipulations, ended with catheters removal due to persistent malfunction. Eight patients had immediately successful restoration of catheter malfunction at the time of the procedure, two patients in the first week, and one patient in the third week. 3) There were four complications followed by the procedure : two were CAPD peritonitis and exit site infection and leakage followed by fluoroscopy guided brushing, and the other were laparoscopy related leakage from puncture site which was recovered by resting for two weeks and a broken catheter tip within peritoneal cavity which could be removed safely by laparoscopy. Conclusion: Fluoroscopy or laparoscopy guided manipulation of catheter was considered as re- commendable techniques in the catheter malfunction and could also be a desirable alternative to surgical placement of a new catheter.

경요골동맥중재술시 발생한 스텐트탈락의 제거 : 8 Fr 유도초와 Forcep을 이용한 새로운 방법

박진곤,김무현,배영진,이수훈,차광수,양창호,김영대,김종성 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.10

Observations on seaweed attachment to bivalve shells in Peter the Great Bay (East Sea) and their taphonomic implications

Konstantin A. Lutaenko,Irina R. Levenets 한국패류학회 2015 The Korean Journal of Malacology Vol.31 No.3

Observations in beach, intertidal and upper subtidal environments in Peter the Great Bay (north-western East Sea) have shown that attached algae were found on empty shells of 13 species of epifaunal and infaunal bivalve mollusks. Thirteen algae species were identified on empty dislodged shells but more than 50 species are known to be epibiotic on living bivalves. The dislodgement of shells with attached algae takes place in semi-enclosed, low-energy areas, as well as those which are open and affected by strong wave action, indicating the large scale of this phenomenon. The significance of seaweed transportation of living mollusks and their empty shells in the coastal zone, involving both taphonomic and ecological processes, is stressed. Algae appear to be a taphonomic agent and play a similar role as compared to birds or hermit crabs, but they act passively and contribute to environmental mixing in death assemblages in coastal environments.

Observations on seaweed attachment to bivalve shells in Peter the Great Bay (East Sea) and their taphonomic implications

Lutaenko, Konstantin A.,Levenets, Irina R. The Malacological Society of Korea 2015 The Korean Journal of Malacology Vol.31 No.3

Observations in beach, intertidal and upper subtidal environments in Peter the Great Bay (north-western East Sea) have shown that attached algae were found on empty shells of 13 species of epifaunal and infaunal bivalve mollusks. Thirteen algae species were identified on empty dislodged shells but more than 50 species are known to be epibiotic on living bivalves. The dislodgement of shells with attached algae takes place in semi-enclosed, low-energy areas, as well as those which are open and affected by strong wave action, indicating the large scale of this phenomenon. The significance of seaweed transportation of living mollusks and their empty shells in the coastal zone, involving both taphonomic and ecological processes, is stressed. Algae appear to be a taphonomic agent and play a similar role as compared to birds or hermit crabs, but they act passively and contribute to environmental mixing in death assemblages in coastal environments.

A comparison of strength for two continuous peripheral nerve block catheter dressings

Edward R. Mariano,Lindsay Borg,Steven K. Howard,T. Edward Kim,Lauren Steffel,Cynthia Shum 대한마취통증의학회 2016 Korean Journal of Anesthesiology Vol.69 No.5

Background: Despite the benefits of continuous peripheral nerve blocks, catheter dislodgment remains a major problem, especially in the ambulatory setting. However, catheter dressing techniques to prevent such dislodgment have not been studied rigorously. We designed this simulation study to test the strength of two commercially available catheter dressings. Methods: Using a cadaver model, we randomly assigned 20 trials to one of two dressing techniques applied to the lateral thigh: 1) clear adhesive dressing alone, or 2) clear adhesive dressing with an anchoring device. Using a digital luggage scale attached to a loop secured by the dressing, the same investigator applied steadily increasing force with a downward trajectory towards the floor until the dressing was removed or otherwise disrupted. Results: The weight, measured (median [10th–90th percentile]) at the time of dressing disruption or removal, was 1.5 kg (1.3–1.8 kg) with no anchoring device versus 4.9 kg (3.7–6.5 kg) when the dressing included an anchoring device (P < 0.001). Conclusions: Based on this simulation study, using an anchoring device may help prevent perineural catheter dislodgement and therefore premature disruption of continuous nerve block analgesia.