The quality of fixed prosthodontic impressions

Rau, Clayton T.; Ólafsson, Vilhelm G.; Delgado, Alex J.; Ritter, André V.; Donovan, Terry

doi:10.1016/j.adaj.2017.04.038

Cited by 17 publications

(26 citation statements)

References 29 publications

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“…This study showed that 97% of impressions received by the dental laboratories had at least one detectable error which is in agreement with previous studies [ 14 – 17 ].…”

Section: Discussionsupporting

confidence: 93%

“…An impression evaluation form modified from previous studies was used to collect the data [ 14 – 17 , 25 ]. All impressions were tested immediately before manipulation by dental technicians.…”

Section: Methodsmentioning

confidence: 99%

“…In 2014, results of an evaluation of 200 impressions sent to four dental laboratories in Malaysia resulted in 64.5% of examined impressions to be inadequate or unacceptable [ 16 ]. A recent survey in North Carolina, USA showed that 86% of the evaluated impressions had at least 1 visible error, and 55% of the detectable errors were critical errors affecting the preparation finish line [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…On the basis of personal communication with technicians, many technicians claim they are noticing a decline in the quality of impressions they have been receiving over the years [ 17 ]. Therefore, it is important to examine whether dentists critically examine impressions before transferring them to the laboratories.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the quality of fixed prosthesis impressions in private laboratories in a sample from Yemen

et al. 2020

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Background Fixed prosthodontics require an accurate impression for the teeth and the area to be restored for the laboratory to fabricate the desired restoration without mistakes. This study evaluated the quality of impressions received by private laboratories for the fabrication of fixed prosthesis by describing the frequency of clinically detectable errors and by analyzing association between the various factors involved. Methods 165 impressions were collected from four dental laboratories. Jaw involved, type of tray, size of tray, number of prepared units, type of impression materials, techniques and viscosity in case of elastomeric impressions and type of prosthesis requested were recorded. Data referring to errors and visible defects including errors in finish line, in preparation area, in silicone impression technique and blood in impression were also documented. Factors affecting errors present were also assessed. Association between dentist gender and experience years and impression errors was assessed. Chi square and Fisher exact tests used to examine the association between categorical variables and outcomes. Results The total of error considering not immediately pouring as an error. Alginate was the most impression used. of impressions evaluated (50.9%), 97% were have at least one visible error; 92.1% had errors in finish line, 53.9% had errors in preparation area and (72.8%) of elastomeric impressions were have at least one error in technique. Blood in impression was detected in 52.1% of impressions. Significant association was found between material type and errors in finishing line and preparation area. Significant relationships were found between gender and errors in silicone impression technique (p < 0.05). Conclusion Within the limitations of this study, high frequency of detectable errors was found in fixed prosthesis impressions received by private dental laboratories. This high frequency is of serious concern, as this will result in poor fitted fixed prosthesis provided to patients.

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“…This study showed that 97% of impressions received by the dental laboratories had at least one detectable error which is in agreement with previous studies [ 14 – 17 ].…”

Section: Discussionsupporting

confidence: 93%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of the quality of fixed prosthesis impressions in private laboratories in a sample from Yemen

et al. 2020

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“…Undergraduates should also have a sufficient understanding of clinical and laboratory processes so that they can evaluate their own clinical work, the quality of their impressions, and the work received from dental technicians. 15 However, undergraduates have been found to show poor understanding of the dental technicians' techniques and procedures and only 26% of technicians believed that dental students were taught to communicate with dental laboratories effectively. 16 This may be attributed to a reduction in the amount of 'hands-on' dental technology training provided for dental undergraduates.…”

Section: It Is Important That Dental Undergraduates Are Fulfilling Thmentioning

confidence: 99%