Clinical Evaluation of and parental satisfaction with resin-faced stainless steel crowns

Resident: Roberts

Date: 12/1/10

Article title: Clinical Evaluation of and parental satisfaction with resin-faced stainless steel crowns.

Author: Roberts, Charles et al.

Journal: Pediatric Dentistry

Volume: 23:1 pages: 28-31

Year 2001

Discussion: Stainless steel crowns for the maxillary anteriors present with some advantages and disadvantages. They are retentive, easy to place, durable, but may be esthetically displeasing to the parent/ child. Stainless steel crowns with a resin facing offer the most esthetics. This can be achieved chair side by the operator who manually cuts a window into the facing and places the resin, or prefabricated crowns with a resin facing can be purchased. These usually come with a composite resin attached to a mesh facing or a thermoplastic resin that has been bonded to the crown. Pre- veneered crowns are substantially more expensive than traditional ones, and offer little flexibility in comparison to traditional ones when crimping or contouring the crown to fit the tooth. They also cannot be heat sterilized due to the potential damage to the veneer.

Purpose:

This study evaluated the clinical success and parental acceptance of anterior primary dentition caries treatment with prefabricated resin-faced stainless steel crowns.

Methods: A retrospective analysis of maxillary anterior primary dentition caries treatment using Whiter Biter @ Crowns was performed. Each crown was evaluated for retention, fracture, interface failure, color match, marginal integrity, and surface texture. Parental satisfaction regarding the esthetics of the crowns was evaluated by survey.

Results: Thirty-eight crowns were evaluated in 12 children. The average crown age at time of evaluation was 20.7 months. Twelve crowns (32%) showed loss of at least some facial resin. Nine crowns (24%) had complete loss of the resin facing Overall parental satisfaction with the treatment was excellent, however, satisfaction with crown esthetics received the lowest rating.

Type of veneer facing loss

Entire facing - 9

Site of resin failure

Resin-resin - 4

Resin - metal - 3

Metal - metal - 1

could not be determined - 1

Veneer fracture tear - 3

Incisal 1/3 - 2

Incisal 1/2 - 1

Category (1-5 Mean *1 very dissatisfied, *5 very satisfied)

Appearance - 3.6

Color - 3.9

Shape - 4.3

Size - 4.2

Durability - 3.9

Conclusions: While parental satisfaction with treatment of anterior primary dentition with prefabricated resin-faced stainless steel crowns is excellent the high failure rate of the resin facings is problematic.

Assessment: I would like to see a study that evaluated failure of resin facings among various crown companies like Cheng vs. Nusmile.