Crowns and Prosthodontics

Coffman, Curt; Visser, Chris J.; Soukup, Jason W.; Peak, Michael

doi:10.1002/9781118816219.ch18

Cited by 13 publications

(9 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Subgingival crown preparations are not recommended, and if biologic width may be impinged upon, crown lengthening procedures are recommended. 5 Biologic width is “the combined width of the connective tissue and the epithelial attachment to the tooth above the crestal alveolar bone.” 5,21 Interference with or impingement on biologic width (approximately 2.5 mm from the restoration margin to the crestal bone) leads to periodontal inflammation, and a physiologic response to reestablish biologic width. 5,20 Subjectively, the feather preparation is relatively easy to perform, and the marginal or near-marginal placement is more cosmetic than the frequently recommended 1 to 2 mm supragingival margin (Figure 5).…”

Section: Discussionmentioning

confidence: 99%

“…5 Biologic width is “the combined width of the connective tissue and the epithelial attachment to the tooth above the crestal alveolar bone.” 5,21 Interference with or impingement on biologic width (approximately 2.5 mm from the restoration margin to the crestal bone) leads to periodontal inflammation, and a physiologic response to reestablish biologic width. 5,20 Subjectively, the feather preparation is relatively easy to perform, and the marginal or near-marginal placement is more cosmetic than the frequently recommended 1 to 2 mm supragingival margin (Figure 5). 2 In those teeth for which photographic and radiographic evidence was available, the examining veterinarian did not find any evidence of increased periodontal attachment or bone loss in these teeth at any time.…”

Section: Discussionmentioning

confidence: 99%

“…Personal preference (eg, bur choice) plays a significant role in crown preparation, but in general, a chamfer margin is created by first using a round diamond bur around the circumference of the tooth just above the gingival margin, cutting into the enamel to a depth of 0.5 to 1.0 mm. 5 The primary characteristic of the chamfer margin is the rounded internal line angle created with the round diamond bur as described above. 2 Shoulder margins, or 90° margins, are recommended for porcelain fused to metal (PFM) restorations, and may be created with a flat-end cylinder diamond bur.…”

Section: Introductionmentioning

confidence: 99%

“…2 Shoulder margins, or 90° margins, are recommended for porcelain fused to metal (PFM) restorations, and may be created with a flat-end cylinder diamond bur. 2,5 The axial portions of the tooth are then removed to the depth of the margin and shaped to create a smooth preparation, with no unsupported enamel or undercuts.…”

Section: Introductionmentioning

confidence: 99%

“…2 Anecdotally, feather preparations are faster and easier to perform, take impressions of, and finish, and because less tooth structure is removed in this preparation the remaining tooth is stronger and more resistant to fracture. 5 Crown preparation should remove as little enamel and/or dentin as is necessary, allowing space for a prosthodontic crown to fit without contacting other teeth, and eliminating enamel undercuts. 14 Enamel thickness in dogs is inconsistent, varying from 0.1 to 0.6 mm across a tooth, and the cervical bulge is an area of tooth thickening, not thicker enamel.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Success of Feather Margin Preparation for Full Metal Prosthodontic Crowns in the Canine Teeth in 84 Pet and Working Dogs (2005-2017)

Ribka

Niemiec

2021

J Vet Dent

View full text Add to dashboard Cite

Medical and dental records of Veterinary Dental Specialties and Oral Surgery were searched to identify dogs that received full metal prosthodontic crowns on canine teeth, using a feather or knife edge preparation between 2005 and 2017. A total of 160 teeth in 84 dogs were included in the study. Current follow-up by telephone, electronic mail, or electronic messaging was conducted, in addition to thorough record review for in-person recheck examinations. Treatment was considered successful if the prosthodontic crown was in place and no further or additional injury to the tooth had occurred at the time of reexamination, owner contact, or patient death. Tooth fracture apical to the prosthodontic crown occurred in 2 (1.25%) cases, bond failure between the tooth and the cement or the cement and the crown occurred in a single case (0.625%), and one metal crown required replacement after 3 years due to wear (0.625%), for an overall failure rate of 2.5%. These results suggest that feather preparation of the margin is at least as, if not more, successful as the more commonly accepted and performed chamfer margin, and thus is a successful, practical and durable option for prosthodontic crown treatment in dog canine teeth.

show abstract