Attachment Denture Research Articles

Attachment denture: Part II. Components and application of attachment

Attachment denture: Part II. Components and application of attachment

Attachment denture: Part I. Character and types of attachment

在口腔修复治疗中,精密附着体替代了传统修复体的固位方式,使部分患者获得了较理想的修复效果,满足了患者对美观、舒适及组织健康的要求,而得到临床的重视.医师可根据牙列缺损、牙列缺失的情况以及患者对修复的要求,选择附着体并进行附着体义齿设计,在医师和患者共同认可的情况下,进行义齿修复.为此,医师应首先对附着体的特点、类型、适用范围、附着体义齿的生物力学分析及附着体义齿设计等方面有更多的了解,才能更好地把附着体应用于口腔修复临床。

アタッチメント・デンチャーとインプラントを応用して１３年経過した１症例

アタッチメント・デンチャーとインプラントを応用して１３年経過した１症例

A technique for repairing a removable partial denture attachment anchor

A technique for repairing a removable partial denture attachment anchor

Magnetic attachment for denture type appliance in pediatric patients

Several types of denture attachments are used in pediatric dentistry, however, it is difficult to obtain optimal retention using conventional clasps in young patients, because of the shape variations of primary and erupting permanent teeth. We tested application of a magnetic attachment for space maintenance with an orthodontic appliance in pediatric patients. Using a mixed dentition model, we examined the attraction force of denture materials with a magnetic attachment under several conditions, including type of anchor tooth, keeper angle for tooth axis, and direction of retraction. The optimal keeper angle for the primary first, second, and permanent first molars of the maxilla and primary first and second molars of the mandible was 10°, whereas 20° is best for the permanent first molars of the mandible. In the maxilla, a denture containing primary first and second molars as anchor teeth had relatively high retention compared to the same with permanent first molars. In clinical cases, dentures with magnetic attachments showed greater attraction force than those with Adams clasps in the maxilla, while in the mandible, retention was not significantly different between the two. These results suggest that a magnetic attachment may be useful for denture appliances in pediatric patients.

Stress distribution of abutments and base displacement with precision attachment- and telescopic crown-retained removable partial dentures.

Five types of removable partial dentures (two attachment dentures, two telescopic dentures and one clasp denture) were designed. The two attachment dentures were retained by the rigid-precision attachments with or without a stabilizing arm, and the two telescope dentures were retained with cone telescope crowns with or without cross-arch stabilization. The stresses acting on abutment teeth and denture bases and the movements of denture bases were investigated, and the influences of denture design were clarified. The stress acting on a terminal abutment tooth retained by a rigid-precision attachment or cone telescopic crown was larger than that acting on a terminal abutment tooth retained by a clasp. The attachment dentures tended to concentrate more stress at the terminal abutment tooth than did the telescopic dentures. The stress of denture base of an attachment denture and a telescopic denture was less than that of a clasp denture. There was no difference between the stresses of attachment and telescopic dentures. The displacement of the denture base tended to be less when the denture was designed with a rigid connection for the retainer and with cross-arch stabilization.

A Case Report of Magnetic Attachment Denture covering Six Years

A Case Report of Magnetic Attachment Denture covering Six Years

GIGI TIRUAN KAITAN PRESISI UNTUK KASUS UNILATERAL FREE END RAHANG BAWAH

It is not easy to find a good and comfortable design for a lower unilateral free end denture (Class II Kennedy), while a fixed bridge is contraindicated, and removable denture is not convenient, because a bar is esxisting on the floor of the mouth. The latest and most sophisticated way is to construct an implant supported denture, but this method is not preferred by most of the patients because surgery has to be undergone. To solve this problem, a precision attachment denture with an extracoronal retainer using MKI hinge attachment was used. The female part of the attachment was placed distal of tooth 45, and tooth 44 and 45 were splinted together , then a removable saddle denture was fabricated for the missing tooth 46. Patient female, aged 50 years very pleased with her denture because it fulfilled her expectation. MKI hinge attachment for a lower unilateral free end denture gives good result in function as well as esthetic.

Comparison of load transfer by maxillary distal extension removable partial dentures with a spring-loaded plunger attachment and I-bar retainer

This study photoelastically compared the stress distribution characteristics of two maxillary bilateral distal-extension removable partial denture designs, one using I-bar retention and the other using a semiprecision spring-loaded plunger attachment. Each prosthesis was subjected to vertical and horizontal extension-base loads. Comparisons were made from photographic recordings of isochromatic fringe distributions. The two retention designs produced comparable stresses with splinting of abutments for the plunger attachment. The attachment-retained prosthesis proved less stable with some loadings. Stress patterns followed three trajectories in the maxilla. A basis for stress distribution comparisons to other maxillary removable partial denture attachments is established.

Crown Preparations for Semiprecision Attachment Removable Partial Dentures

The utilization of intracoronal or extracoronal removable partial denture attachments in conjunction with a fixed retainer applies additional stresses to the structural durability of the fixed retainer and its integrity with the underlying abutment. Therefore, the utilization of this attachment with a fixed retainer requires understanding and diligent application of the basic principles of fixed prosthodontics.The primary objective of prosthodontics must be the preservation and health of the remaining existing tissues and structures: teeth, periodontal tissues, temporomandibular joint, and oral facial muscles. This must be of primary importance as we achieve our goals of (1) eliminating existing pathology, (2) restoring morphology and function, and (3) improving esthetics and thereby heightening self-esteem and the psychological well-being of the individual. These objectives make us sensitive to the considerations we have discussed in preparation design and the tissue management required in the fabrication of fixed retainers.

Indications and use of the Pin Desmarets attachment

The Pin Desmarets attachment is a sophisticated means to connect segments of fixed restorations. The attachment possesses the rigidity of a solder joint and is also convertible into a removable partial denture attachment without disturbing the matrix portion of the restoration.

An external partial denture attachment

Used to minimize the problems of a free-end partial denture, the spring-loaded, externally-hinged attachment is placed on the casting of the abutment tooth adjacent to the edentulous region. Used to minimize the problems of a free-end partial denture, the spring-loaded, externally-hinged attachment is placed on the casting of the abutment tooth adjacent to the edentulous region.