• Title/Summary/Keyword: roll technique modification

Search Result 7, Processing Time 0.03 seconds

RIDGE AND INTERDENTAL PAPILLA AUGMENTATION USING ROLL TECHNIQUE MODIFICATION (Roll Technique을 변형한 치조융선 및 치조유간 증대)

  • Yang, Chang-Ho;Han, Soo-Boo;Son, Seong-Huei;Yi, Ki-Young;Chang, Beom-Seok;Hwang, Kwang-Se
    • Journal of Periodontal and Implant Science
    • /
    • v.26 no.3
    • /
    • pp.763-769
    • /
    • 1996
  • A depressed alvelolar ridge and a collapsed interdental papilla in the anterior region may interfere with esthetic prosthodontic repair. The resultant sequelas will cause overcontoured prosthesis or dark shadow under pontic which may not suffice our patients' esthetic demands. So, surgical periodontal treatment has been needed for esthetic repair in deformed ridges and extensive interproximal spacing. Our treatment option alters Dr.Abram's roll technique to make palatally extended connective tissue secondary pedicle flap to obtain additonal connective tissue. Blood supply maintenance, least trauma, and no secondary wound is advantages in this modification.

  • PDF

A Dynamic Set-up Technique for High Accuracy set-up of Continuous Hot Strip Finishing Mill (열간 마무리압연 설정의 정도향상을 위한 동적 설정법)

  • 문영훈;이준정
    • Transactions of Materials Processing
    • /
    • v.5 no.3
    • /
    • pp.232-238
    • /
    • 1996
  • A dynamic mill set-up technique was developed to achieva a more precise roll gap set-up of the finishing mill stands for steel strip rolling. In the conventional mill set-up model the set-up values such as roll gap and roll speed are determined before the sheet bar reached the entry side of the finishing mill train and maintained constant until the strip top end passes through the last stand. In the way however a dynamic set-up logic that gives a way to adjust the roll gap value of the final mill stand for the strip ingoing from the ahead of the front stand was developed and attached to the existing set-up model. The roll gap modification is based on the analysis of the observation in the third stand of the finishing mill train. The dynamic set-up model was proved very effective for the more precise mill set-up and for operational stability in the hot strip finishing mill train.

  • PDF

Surgical outcomes of 14 consecutive bilateral cleft lip patients treated with a modified version of the Millard and Manchester methods

  • Al-Zajrawee, Mustafa Zahi;Aljodah, Mohammed Abd-Alhussein;Hassan, Qays Ahmed
    • Archives of Plastic Surgery
    • /
    • v.46 no.2
    • /
    • pp.114-121
    • /
    • 2019
  • Background Bilateral cleft lip deformity is much more difficult to correct than unilateral cleft lip deformity. The complexity of the deformity and the sensitive relationships between the arrangement of the muscles and the characteristics of the external lip necessitate a comprehensive preoperative plan for management. The purpose of this study was to evaluate the repair of bilateral cleft lip using the Byrd modification of the traditional Millard and Manchester methods. A key component of this repair technique is focused on reconstruction of the central tubercle. Methods Fourteen patients with mean age of 5.7 months presented with bilateral cleft lip deformity and were operated on using a modification of the Millard and Manchester techniques. Patients with a very wide cleft lip and protruded or rotated premaxilla were excluded from this study. We analyzed 30 normal children for a comparison with our patients in terms of anthropometric measurements. Results By the end of the follow-up period (between 9 and 19 months), all our patients had obtained a full central segment with adequate white roll in the central segment and a deep gingivolabial sulcus, and we obtained nearly normal anthropometric measurements in comparison with age-matched normal children. Conclusions We recommend this modified technique for the treatment of bilateral cleft lip deformity.

Chemical Sensors Using Polymer/Graphene Composite and The Effect of Graphene Content on Sensor Behavior (고분자/그래핀 복합재료의 센서 응용 및 그래핀 함량이 센서 거동에 미치는 영향)

  • Bae, Joonwon
    • Applied Chemistry for Engineering
    • /
    • v.31 no.1
    • /
    • pp.25-29
    • /
    • 2020
  • In this study, a polymer/graphene hybrid composite was prepared by a simple roll-method and a simple sensor was produced by a convenient surface engineering procedure. The sensor performance was examined and the effect of graphene content on the sensing behavior was monitored. A polymer (polydimethylsiloxane, PDMS) paste containing graphene powder was prepared by a three-roll apparatus and polymer/graphene hybrid composite was produced by a two-roll technique. The sensing medium, cyclodextrin (CD) was introduced by a convenient bio-conjugation method. The efficacy of surface modification was confirmed by FT-IR spectroscopy and the ohmic relation was observed on composite surfaces. An analyte (e.g., methyl paraben, MePRB) at a 10 nM concnetration could be detected. When the graphene loading was low, the sensor performance was relatively poor. This was attributed to the absence of graphene alignments, which were observed for the composites having a high graphene loading. This indicates that the sensor performance was influenced by physical alignments of the filler. This article can provide important information for future research on developing sensing devices.

An Approach to decide the location of a method using the logistic analysis (로지스틱 분석을 이용한 메소드 위치 결정 방법)

  • Jung Young A.;Park Young B,
    • The KIPS Transactions:PartD
    • /
    • v.12D no.7 s.103
    • /
    • pp.1017-1022
    • /
    • 2005
  • There are many changes in the software requirements during the whole software life cycle. These changes require modification of the software, and it is important to keep software quality and stability while we are modifying the software. Refactoring is one of the technology to keep software quality and stability during the software modification; there are many researches related to automatic refactoring. In this paper, we propose three factors for Move Method which is one of the refactoring technique. We applied binomial logistic analysis to data which were extracted from sample program by each factor. The result of this process was very close to the result of manual analysis by program experts. Furthermore, we found that these factors have major roll to determine Position of a method, and these factors can be used as a basis of finding optimal position of a method.

A Modified McIndoe Operation for Treatment of Vaginal Agenesis (개량된 McIndoe 술식을 이용한 무질증 환자의 질 재건)

  • Tark, Kwan Chul;Choi, Bong Kyoon;Choi, Jong Woo
    • Archives of Plastic Surgery
    • /
    • v.32 no.1
    • /
    • pp.117-123
    • /
    • 2005
  • The reconstructive modalities for vaginal reconstruction include simple dilatation, skin graft, use of intestinal segments and various methods using flaps. However, skin grafting procedure is the most commonly used technique and the McIndoe procedure is a representative technique among skin grafting procedures. McIndoe procedure is easier, faster and has a lower morbidity compared to other techniques. However the conventional McIndoe procedure has several problems such as incomplete vestibule formation, excessive bleeding during dissection, possibility of recto-vaginal or urethro-vaginal fistula formation, late vaginal contracture and discomfort in wearing hard plastic mold for a long time after operation. To solve these problems, the authors modified the conventional McIndoe procedure in several perspectives. The undeveloped vestibule was incised with X-shaped mucosal incision between the urethral opening and posterior margin of the vestibule and deepened by blunt finger dissection to provide a sufficient diameter & length of the neovagina and to minimize bleeding. A sizable medium thickness split skin graft was harvested and wrapped over a roll gauze-filled condom mold. Applying multiple stab incision on the skin grafted condom mold, it was inserted into the prepared neovaginal canal. Distal margin of the skin graft was secured with tips of the mucosal flaps created by X-shaped vestibular incision to prevent accidental extrusion of the skin grafted mold. During last 15 years, we applied this modification to 20 vaginal agenesis patients and investigated results of the 12 patients who could be followed up serially including hematoma formation and skin graft survival rate, size, depth, presence of late contracture, appearance, comfortness, and hygiene of the neovagina. And they were compared with 8 patients of 20 patients who underwent conventional McIndoe procedures. The modified McIndoe procedure revealed lower complication rate, higher patient satisfaction and better functional results.

Modified Fisher method for unilateral cleft lip-report of cases

  • Kim, Hui Young;Park, Joonhyoung;Chang, Ming-Chih;Song, In Seok;Seo, Byoung Moo
    • Maxillofacial Plastic and Reconstructive Surgery
    • /
    • v.39
    • /
    • pp.12.1-12.5
    • /
    • 2017
  • Background: Rehabilitation of normal function and form is essential in cleft lip repair. In 2005, Dr. David M. Fisher introduced an innovative method, named "an anatomical subunit approximation technique" in unilateral cleft lip repair. According to this method, circumferential incision along the columella on cleft side of the medial flap is continued to the planned top of the Cupid's bow in straight manner, which runs parallel to the unaffected philtral ridge. Usually, small inlet incision is needed to lengthen the medial flap. On lateral flap, small triangle just above the cutaneous roll is used to prevent unesthetic shortening of upper lip. This allows better continuity of the Cupid's bow and ideal distribution of tension. Case presentation: As a modification to original method, orbicularis oris muscle overlapping suture is applied to make the elevated philtral ridge. Concomitant primary rhinoplasty also results in good esthetic outcome with symmetric nostrils and correction of alar web. As satisfactory results were obtained in three incomplete and one complete unilateral cleft lip patients, indicating Fisher's method can be useful in cleft lip surgery with functional and esthetic outcome. Conclusions: Clinically applied Fisher's method in unilateral cleft lip patients proved the effectiveness in improving the esthetic results with good symmetry. This method also applied with primary rhinoplasty.