Retrievability of implant-supported zirconia restorations cemented on zirconia abutments

Lennartz, Andrea; Dohmen, Andrea; Bishti, Shaza; Fischer, Horst; Wolfart, Stefan

doi:10.1016/j.prosdent.2018.01.011

Cited by 8 publications

(6 citation statements)

References 27 publications

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“…Therefore, the first null hypothesis must be rejected since the objective of this study was to demonstrate homogeneous retention values of the three cements tested. Other studies also showed heterogeneous results regarding the retentive strength of different cements [5,[21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39]. Therefore, some studies published guidelines for clinicians since no cement served for all demands [40,41].…”

Section: Discussionmentioning

confidence: 99%

“…However, thermocycling can be used to mimic the clinical situation, but it has no relevance for direct comparisons to in vivo conditions [19]. Some studies have performed thermocycling in order to evaluate retention forces of the cements tested [5,[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38]. For temporary cements, a considerable decrease in regards to the pull-off forces has been proven to be caused by the artificial ageing process [22].…”

Section: Discussionmentioning

confidence: 99%

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Retention of different temporary cements tested on zirconia crowns and titanium abutments in vitro

et al. 2021

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Purpose The aim of the present study was to examine the retention force of monolithic zirconia copings cemented with various temporary cements on implant abutments in vitro. Methods Sixty exercise implants with pre-screwed implant abutments were embedded in resin. Subsequently, 60 CAD/CAM manufactured zirconia copings were divided into three main groups [Harvard Implant Semi-permanent (HAV), implantlink semi Forte (IMP), Temp Bond NE (TBNE)]. The zirconia copings were cemented on the implant abutments and loaded with 35 N. Specimens were stored in distilled water (37 °C) for 24 h. Half of the test specimens of each group were subjected to a thermocycling (TC) process. Retention force was measured in a universal testing machine. Using magnifying glasses, the fracture mode was determined. Statistical analysis was performed applying the Kruskal-Wallis test, the post hoc test according to Dunn-Bonferroni and a chi-square test of independence. Results Without TC, IMP showed the highest retention of the three temporary luting agents (100.5 ± 39.14 N). The measured retention forces of IMP were higher than those of HAV (45.78 ± 15.66 N) and TBNE (61.16 ± 20.19 N). After TC, retention was reduced. IMP showed the greatest retentive strength (21.69 ± 13.61 N, three fail outs). HAV and TBNE showed pull-off forces of similar magnitude (17.38 ± 12.77 N and 16.97 ± 12.36 N, two fail outs). The fracture mode analysis showed different results regarding the tested cements before and after TC (facture type before/after TC): IMP (III+II/III), HAV (I/II) and TBNE (III/III). There were clear differences of the fracture modes regarding the examination before and after TC. Conclusions Within the limits of this study, IMP showed the highest pull-off forces under the chosen test conditions. All three temporary luting agents showed lower retention forces after TC. Retention values in the individual cement classes were very heterogeneous. Easy cement removal in the crown lumen favours the dominance of adhesive cement fractures on the abutment and adhesive/cohesive cement fractures on the abutment with HAV appears advantageous in case of recementation of the superstructure.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Retention of different temporary cements tested on zirconia crowns and titanium abutments in vitro

et al. 2021

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“…Artificial ageing (thermocycling) showed in the majority of the studies that retention decreased afterwards [9,14,24,[40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56]. Studies that carried out measurements before and after thermocycling published reduced retentive strengths of about 68% for noneugenol acrylic/urethane resin-based temporary cement, 88% for zinc oxide noneugenol cement, and 94% to 98% for 3 different dual-polymerizing semipermanent resin cements [43].…”

Section: Artificial Ageingmentioning

confidence: 99%

“…At this time, full retention of the glass ionomer cements had probably not yet been achieved [59]. The use of temporary cements, particularly eugenol-free zinc oxide phosphate cements, led to reduced retention values, especially after thermocycling [43,54,59,67]. Consequently, they are not suitable for semipermanent cementation.…”

Section: International Journal Of Dentistry and Oral Healthmentioning

confidence: 99%

“…Schierano G, et al, [74] reported that Coronaflex is more repeatable with higher peak amplitudes of forces, which can be considered as positive. Some studies have performed thermocycling and evaluated the retention forces of the cements tested [9,14,24,[40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56]. Thermocycling has been introduced to imitate artificial ageing.…”

Section: International Journal Of Dentistry and Oral Healthmentioning

confidence: 99%

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Which Factors have an Impact on the Retention of Cemented Crowns on Implant Abutments? A Literature Review

Prause¹,

Rosentritt²,

Beuer³

et al. 2021

Int J Dent Oral Health

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Background: The review presents the scientific state of the art in the field of cementation of crowns on implants. Because semipermanent cements have been specially developed for the cementation of crowns on implants, the question arises whether this cement group offers an advantage compared to other available and widely used cements in everyday clinical practice. Various factors play a role on the retentive strength of superstructures on implants and should therefore be taken into account in this review.

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Advancing dental implants: Bioactive and therapeutic modifications of zirconia

Chopra

Jayasree

Guo

et al. 2022

Bioactive Materials

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Retrievability of implant-supported zirconia restorations cemented on zirconia abutments

Cited by 8 publications

References 27 publications

Retention of different temporary cements tested on zirconia crowns and titanium abutments in vitro

Retention of different temporary cements tested on zirconia crowns and titanium abutments in vitro

Which Factors have an Impact on the Retention of Cemented Crowns on Implant Abutments? A Literature Review

Advancing dental implants: Bioactive and therapeutic modifications of zirconia

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