• Title/Summary/Keyword: celluloid crown

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GLASS FIBER REINFORCED STRIP CROWN IN PRIMARY TEETH (강화형 strip crown의 사용)

  • Kim, Dae-Eop
    • Journal of the korean academy of Pediatric Dentistry
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    • v.32 no.1
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    • pp.132-135
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    • 2005
  • The purpose of this study was to propose the modified strip crown technique for esthetic restoration of primary anterior teeth using glass fibers. Celluloid crown form(3M, USA), Z100(P shade, 3M, USA). Aeliteflo(Bisco Inc., USA), and Clearfil SE Bond(Kuraray Medical Inc., Japan) were used for this technique. Mesh type of glass fiber(TESCERA Fiber Mesh, Bisco Inc, USA) was used for reinforcing material. After trimming the celluloid crown form, resin adhesive and flowable resin were applied on the pre-shaped glass fiber mesh. That mesh was placed on the lingual surface of inside of celluloid crown form and followed by light activation. Composite resin was filled into the celluloid crown form and put it on a prepared tooth and then light activated and finished the margin. The new modified strip crown technique can provide esthetics and increased durability for restoration of primary anterior teeth.

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FULL COVERAGE RESTORATION OF PRIMARY ANTERIOR TEETH : A CASE REPORT (유전치의 전장피개수복 : 증례보고)

  • Hong, Kee-Sang;Jang, Ki-Taeg;Lee, Sang-Hoon
    • Journal of the korean academy of Pediatric Dentistry
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    • v.26 no.2
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    • pp.240-247
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    • 1999
  • Primary anterior teeth requiring extensive restorative therapy due to caries, trauma or developmental defects can present a particularly challenging problem for the pediatric dentist. The ideal restorative technique would combine strength, durability esthetics and efficiency in placement. Couple these concerns with the technical difficulties of operating on children with behavior management problems, and the dentist is left with the difficult task of choosing from a variety of restorative options. Restorative modalities currently in use to treat primary anterior teeth include bonding with composite resin as in celluloid strip crowns, conventional stainless steel crowns, open-faced stainless steel crowns, commercially and chairside veneered stainless steel crowns and epoxy-coated stainless steel crowns. Each of these techniques presents technical, functional or esthetic compromises that complicate their efficient and effective usage. This is a report of the results obtained at the Department of Pediatric Dentistry, College of Dentistry Seoul National University, through the use of these various methods of treating primary anterior teeth.

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Comparison of Crown Shape and Amount of Tooth Reduction for Primary Anterior Prefabricated Crowns (유전치 기성 크라운의 형태 및 치질 삭제량 비교)

  • Kim, Soyoung;Lim, Youjin;Lee, Sangho;Lee, Nanyoung;Jih, Myeongkwan
    • Journal of the korean academy of Pediatric Dentistry
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    • v.46 no.1
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    • pp.64-75
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    • 2019
  • The purpose of this study was to obtain instructions for size selection of prefabricated crown and tooth reduction by 3-dimensional analysis of the size and shape of the maxillary primary central and lateral incisors and prefabricated crowns (celluloid strip, resin veneered stainless steel, and zirconia crowns). The maxillary primary central and lateral incisors of 300 Korean children was scanned with three types of prefabricated crown to create standard three-dimensional tooth models and prefabricated crowns. The shapes of the prefabricated crowns and natural teeth were compared according to four parameters (mesio-distal width, height, labio-palatal width, and labial surface curvature coefficient) and calculated the amount of tooth reduction required for each prefabricated crown. The size 2 resin veneered stainless steel crown, size 1 zirconia crown, and size 2 celluloid strip crown were most similar in shape to the primary central incisor. The size 3 rein veneered stainless steel crown, size 2 zirconia crown, and size 3 celluloid strip crown were most similar to the primary lateral incisor. The amount of tooth reduction was similar in both maxillary primary central and lateral incisors. The incisal reduction was greatest for the zirconia crown. At the proximal surface, the zirconia and celluloid strip crowns required a similar amount of tooth reduction, but more than the resin veneered stainless steel crown. The labial surface reduction was greatest for the zirconia crown. The degree of lingual surface reduction was not significant among the three prefabricated crowns. Among the assessment parameters, mesio-distal crown width was the most important for choosing a prefabricated crown closest to the actual size of the natural crown.

ALTERNATIVE TECHINQUE OF MATRIX BANDING FOR RESTORING OF PROXIMAL CARIOUS LESIONS IN PRIMARY ANTERIOR TEETH (유전치 인접면우식증의 복합레진 충전시 변형된 matrix band의 사용)

  • Ra, Ji-Young;Cho, Hyun;Kim, Dae-Eop;Lee, Kwang-Hee
    • Journal of the korean academy of Pediatric Dentistry
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    • v.30 no.3
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    • pp.453-458
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    • 2003
  • Usually Mylar strip and wedge or celluloid strip crown were used in conventional method of restoring proximal carious lesions of primary anterior teeth. But, these methods have some difficulties to place the matrix and wedge due to short crown lenth and interdental spacing of primary teeth. And it is difficult to form proper cavosurface margin due to the rigidity of matrix and inconvenience to support matrix by practitioner's hand in narrow oral cavity of child. This article describes an alternative technique for restoring carious lesions of primary anterior teeth using available straw. This method is very convenient and reduce chair time and it also allows good marginal adaptation.

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REMOVABLE DENTURE FOR CHILD WITH LOSS OF VERTICAL DIMENSION USING T-SCAN : A CASE REPORT (T-Scan을 이용한 감소된 수직고경을 가진 소아의 가철성 의치 제작)

  • Chung, Yang-Seok;Lee, Chang-Seop;Lee, Sang-Ho;Lee, Nam-Young
    • Journal of the korean academy of Pediatric Dentistry
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    • v.33 no.1
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    • pp.103-108
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    • 2006
  • Loss of permanent molar by multiple dental caries traumatic influence or hereditable disease can cause loss of the vertical dimension in children. However traditionally reconstructive treatment to restore vertical dimension in children has been provided by using simple methods such as celluloid crown form and stainless steel crown. The presented case report describes an alternative treatment modality of vertical dimension by using removalbe appliance This appliance is made with average of facial height and maximal clenching force by using T-scan.

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Three Dimensional Analysis of Primary Maxillary Central and Lateral Anterior Zirconia Crown (상악 유절치 지르코니아 전장관 수복을 위한 3차원 분석)

  • Lee, Jungmin;Lee, Hyoseol;Nam, Okhyung;Kim, Misun;Choi, Sungchul
    • Journal of the korean academy of Pediatric Dentistry
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    • v.43 no.2
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    • pp.176-186
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    • 2016
  • This study was performed to compare the shape and dimension of anterior zirconia crowns to other pediatric crowns using a three-dimensional scanner to investigate adequate amount of tooth preparation. Primary central and lateral anterior zirconia crowns, stainless steel crowns and celluloid strip crowns were scanned by a three-dimensional scanner. Outer and inner surfaces of zirconia and stainless steel crowns, and outer surface of celluloid strip crowns were analyzed. In outer scanned images, all sizes of central and lateral size 1 zirconia crown had the largest labiolingual diameter among the three crowns. In inner scanned images, zirconia crown's mesiodistal diameter was 0.7-1.0 mm smaller and crown length was approximately 1 mm shorter than those of stainless steel crowns. Zirconia crown's labiolingual diameter was larger in central crowns whereas it was smaller in lateral crowns than that of stainless steel crowns. Recommended preparation required for zirconia crown is incisal 2.5-3.0 mm, mesiodistal 1.5-2.0 mm, labial 0.5-1.0 mm. Cingulum should be trimmed parallel to the long axis. No more lingual reduction is needed in central incisors whereas additional 0.5 mm reduction is suggested in lateral incisors.

A CASE REPORT ON PRIMARY INCISOR TREATMENT USING OPEN-FACE STAINLESS STEEL CROWN (Open-face Stainless Steel Crown을 이용한 유전치의 치료에 대한 증례보고)

  • Kim, Jong-Min;Choi, Hyung-Jun;Lee, Jae-Ho;Choi, Byung-Jae
    • Journal of the korean academy of Pediatric Dentistry
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    • v.24 no.4
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    • pp.781-787
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    • 1997
  • In spite of the improvements of the techniques in the field of preventive dentistry, many children still present with extensive destruction of primary anterior teeth. Not only the practioner must consider the pulp state of the primary incisor, but also restore the form, function and esthetics of the tooth. Restorative treatment of primary incisor tooth requires durability, retention and esthetics. Stainless steel crowns used in restoring primary anterior teeth is retentive and durable in comparison with the composite resin, celluloid crown. But they are not esthetic. To enhance the esthetics of the anterior stainless steel crown without reducing its superior retention, an open-face stainless steel crown has been suggested. Several authors have suggested cutting away the labial portion of the stainless steel crown and placing the composite resin in that area. By following this technique, the practioner can prepare a retentive, durable, and esthetic restoration for primary teeth which have suffered from extensive loss of teeth structure. In addition, the single missing primary anterior teeth can be successfully restored by soldering the stainless steel crown together. Open-face stainless steel crown is indicated in the areas of large interproximal lesions involving incisal edge, crown fracture with pulp exposure and congenital malformation of the teeth. By this technique, the practioner can restore primary anterior teeth successfully regardless of the amount of remaining tooth structure, bruxism habit and presence of attrition. In this case, rampant caries with extensive loss of tooth structure and single missing of primary anterior tooth hart been successfully treated with open-face stainless steel crown.

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LABIAL APPROACH OF PULP TREATMENT AND RESIN RESTORATION ON DISCOLORED NECROTIC PRIMARY ANTERIOR TOOTH (변색된 유전치의 순측접근에 의한 치수치료 및 레진수복)

  • Chae, Moon-Hee;Song, Je-Seon;Choi, Hyung-Jun;Kim, Seong-Oh
    • The Journal of Korea Assosiation for Disability and Oral Health
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    • v.10 no.2
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    • pp.84-88
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    • 2014
  • Traditional method of pulpectomy for a necrotic primary anterior tooth was done on lingual side. But it could not recover the discoloration of crown effectively. For the purpose of treating the discoloration of crown after lingual pulpectomy, additional methods of crown restoration were needed like : celluloid crown, open-faced crown, rasin-faced crown. Neverthless, these kinds of complete coverage methods had some disadvantages such as possibility of tooth fracture by increased tooth preparation. In order to overcome the shortcomings of lingual pulpectomy, labial treatment could be considered as an alternative. It is a method that treats necrotic pulp through the labial access opening. After finishing the pulp treatment, discolored labial tooth structure was removed extending from access opening. Discoloration of deep area could be masked effectively using opaque sealant. Cavity on labial side was restored with composite resin. This labial approach method has several advantages. First, it gives a direct vision for effective pulp treatment which is also very useful for children with poor behavior. Second, most of lingual tooth structure could be saved and occlusal contact of lingual surface remains undisrupted. Only nonfunctional discolored labial surface may removed. Third, complete removal of discolored part of a labial tooth and immediate resin restoration could be done effectively after pulp treatment. Moreover, it also could be used for pulp treatment having serious dental caries on labial surface with sound lingual tooth structure. This report presents cases with discolored upper anteior primary tooth, approaching labial side with successful restoration.