Biomechanical evaluation of abutment stability in morse taper implant connections in different times: A retrospective clinical study compared with an in vitro analysis

Gehrke, Sérgio Alexandre; Cortellari, Guillermo Castro; Aza, Piedad N. De; Lima, José Henrique Cavalcanti; Prados-Frutos, Juan Carlos

doi:10.1016/j.heliyon.2023.e15312

Cited by 1 publication

(2 citation statements)

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“…In our study, abutments of similar heights were used, with a difference of 1 mm between the abutments in group A and the abutments in groups B and C. However, when straight abutments were compared with angled abutments, angled abutments had lower stability values measured by RFA [27], corroborating our results. On the other hand, when we compare the results obtained in this study with the results recently published by our research group, we observe a proximity in the measured stability values after the application of cyclic loads [18]. The friction in the conical connections is responsible for the stability of the abutments.…”

Section: Plos Onesupporting

confidence: 75%

“…One of the main features of the Ideale abutment is the ability to receive both screw-retained and cemented crowns, as it has an internal thread on the upper part like a multi-unit abutment, which makes it possible to use this sensor to measure stability [13,18]. Then, after completion of cyclic loading, all loaded and unloaded specimens were evaluated for abutment stability using the Osstell Mentor device (Integration Diagnostics AB, Go ¨teborg, Sweden).…”

Section: Stability Measurementmentioning

confidence: 99%

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Does the index in Morse taper connection affect the abutment stability? An in vitro experimental study

Goyeneche,

Cortellari,

Rodriguez

et al. 2024

PLoS ONE

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The present study compared three different implant and abutment sets of type Morse taper (MT) connection, with- and without-index, were analyzed regarding their mechanical behavior without and with cyclic load application simulating the masticatory function. Ninety implant and abutment (IA) sets were used in the present study, divided into three groups (n = 30 samples per group): Group A, Ideale solid straight abutment (one piece) without index; Group B, Ideale abutment with an angle of 30-degree (two pieces) without index; Group C, Ideale abutment with an angle of 30-degree (two pieces) with index. The abutment stability quotient (ASQ) values, detorque value and rotation angle were measured before and after the cycling load. Twenty IA sets of each group were submitted to mechanical load at 360,000 cycles. The ASQ without load were 64.7 ± 2.49 for the group A, 60.2 ± 2.64 for the group B, 54.4 ± 3.27 for the group C; With load were 66.1 ± 5.20 for the group A, 58.5 ± 6.14 for the group B, 58.9 ± 2.99 for the group C. Detorque values were lower in groups B and C compared to group A (p < 0.05). In conclusion, the presence of the index did not influence the stability values. However, solid straight abutments (group A) showed higher values of stability compared to groups of angled abutments (groups B and C).

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Section: Plos Onesupporting

confidence: 75%

Section: Stability Measurementmentioning

confidence: 99%