Accurate procedure for simultaneous registration of gingival emergence profile and maximal intercuspal position for metal ceramic restorations

Tung, Francis F.; Nourbakhsh, Nousha; Bahn, Changhwan

doi:10.1016/s0022-3913(00)70071-0

Cited by 2 publications

(6 citation statements)

References 23 publications

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“…Similar procedure of pouring of a second cast in the final impression as a soft tissue cast was performed with changes in the materials. According to some authors, the problem with this approach is that the gingival tissue has been retracted, and the cast does not correspond accurately to the patient's intraoral situation 1,8. Hence these procedures require conservative tissue management for minimal acceptable retraction that helps reproducing the accessible margins without hampering the gingival tissues architecture much.…”

Section: Discussionmentioning

confidence: 99%

“…Hence these procedures require conservative tissue management for minimal acceptable retraction that helps reproducing the accessible margins without hampering the gingival tissues architecture much. Still some authors have critiqued this procedure, mentioning the problem that the gingiva is not reproduced in a passive state 1. But recording the gingiva in passive state for correct reproduction of the cervical contours sometimes does not allow complete seating of the restorations on the soft tissue cast (especially for subgingival preparations) due to collapsing of the marginal gingiva onto the preparation margins.…”

Section: Discussionmentioning

confidence: 99%

“…The soft tissue emergence profile that surrounds the prepared teeth is destroyed in the process of fabrication. The resultant restorations either show triangular spaces above the tissues or become over or under contoured due to the loss of gingival architecture 1. Overcontoured restorations result in food and plaque retention in the interproximal, facial, and lingual cervical areas which can lead to caries, gingival inflammation, and/or gingival hyperplasia 2-4.…”

Section: Introductionmentioning

confidence: 99%

“…Often, laboratory technicians are unable to contour the crowns properly in the interproximal regions without a soft tissue cast 5. Many procedures for fabrication of the soft tissue casts for conventional fixed partial denture have been reported in the literature 1,5-8. This article describes a modification of the technique described by Williamson et al to fabricate the soft tissue cast for the conventional fixed partial denture 5.…”

Section: Introductionmentioning

confidence: 99%

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Modified soft tissue cast for fixed partial denture: a technique

Patil

2011

J Adv Prosthodont

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In process of fabrication of a fixed partial denture, dies are trimmed to expose margins of the preparations. The need for the soft tissue cast is quite evident as the soft tissue emergence profile that surrounds the prepared tooth is destroyed in the process of fabrication. This article describes a modified technique to fabricate the soft tissue cast for the conventional fixed partial denture. The impression made with the polyvinylsiloxane was first poured to prepare the die cast. After retrieval of the cast, the same impression was poured second time with the resin based resilient material to cover the facial and proximal gingival areas. The remaining portion of the impression was poured with the gypsum material. This technique does not require additional clinical appointment, second impression procedure, technique sensitive manipulations with impression, or cumbersome laboratory procedures. The simplicity of this technique facilitates and justifies its routine use in fabrication of the fixed partial denture.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modified soft tissue cast for fixed partial denture: a technique

Patil

2011

J Adv Prosthodont

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“…Selection of a straight emergence profile for dental restorations facilitates the effectiveness of oral hygiene procedures in the gingival sulcus area (21) and an attempt should be made to flatten the facial and lingual contours of restorations to enable the most effective removal of plaque (22). To produce this flat or straight profile, an artificial crown requires sufficient tooth reduction in the gingival third of the preparation (23,24) and some methods of prescribing the desired emergence profile is preferable (25).…”

Section: Emergence Profilementioning

confidence: 99%

Margin width, internal line angle and labial emergence profiles of maxillary metalloceramic

Yahya

Youngson

2007

ADUM

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The purpose of this study were to compare the emergence profiles of crowns with their contralateral tooth, in vitro, and to determine if there is any association between the design of tooth preparations and the resultant emergence profile. 50 working models used for single crown construction were examined. Measurements of the faciolingual width of the crowns and contralateral teeth were taken using digital calipers. Internal line angles and the margin width of dies and the emergence profile of the corresponding crowns were measured from longitudinally sectioned polyvinylsiloxane indices mounted on a flat-bed scanner using image analysis software. Using Students t tests, no statistically significant differences (p>0.05) were found for shoulder width (mean 0.94 ± 0.23mm), internal line angle (mean 105.83 ± 13.57°) or emergence profiles (28.56 ± 12.95°) in the different (anterior, premolar or molar) preparations or crowns. The mean emergence profiles for all crowns was statistically significantly greater (p<0.001) than the contralateral tooth (mean 15.33 ± 7.77°). Using linear regression, there was a weak statistical relationship between emergence profile and margin width (Emergence profile° = 31.352 -2.973 x margin width (mm)). There was no statistical association between the internal line angle and the resultant emergence profile. In conclusion, the emergence profiles of crowns were higher than the contralateral teeth. Maxillary metalloceramic crown preparations had shoulder widths that did not conform to recommendations in standard texts but line angles were within a satisfactory range. The margin width exerts a weak effect upon the emergence profile of the crown.

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Accurate procedure for simultaneous registration of gingival emergence profile and maximal intercuspal position for metal ceramic restorations

Cited by 2 publications

References 23 publications

Modified soft tissue cast for fixed partial denture: a technique

Modified soft tissue cast for fixed partial denture: a technique

Margin width, internal line angle and labial emergence profiles of maxillary metalloceramic

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