A Comparative Study on the Mechanical Properties of a Polymer-Infiltrated Ceramic-Network Material Used for the Fabrication of Hybrid Abutment

Ongun, Salim; Kurtulmuş-Yılmaz, Sevcan; Meriç, Gökçe; Ulusoy, Mutahhar

doi:10.3390/ma11091681

Cited by 14 publications

(15 citation statements)

References 51 publications

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“…In the present study, there were significant differences between the tightening torque and loosening torque, within each group. The thermal aging may have affected the integrity of the resin cement with adverse effect on load transfer [18,19]. Tzannas et al [26] reported that the removal torque is 85 up to 90% of tightening torque.…”

Section: Discussionmentioning

confidence: 99%

“…The thermal aging has been proposed to simulate the extreme conditions commonly experienced in the oral environment [8,10,17]. The thermal aging could induce the degradation of resin cement at the titanium base insert and the ceramic interface that may affect the load transfer at the interface [18,19]. A major challenge today is understanding the response to each restorative material.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid-abutment-restoration: effect of material type on torque maintenance and fracture resistance after thermal aging

2020

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Purpose: To evaluate the tightening torque maintenance with zirconia, lithium disilicate, and polyetheretherketone (PEEK) hybrid-abutment-crowns after thermal aging, in addition to assess the fracture resistance of hybridabutment-crowns fabricated with different materials. Materials and methods: Thirty implants were restored with identical hybrid-abutment-crowns, resembling the maxillary first premolar, fabricated from zirconia (Zr), lithium disilicate (L2), or ceramic-reinforced PEEK (PE). The three groups (n = 10) were constructed utilizing a Ti-base. After bonding, each restoration was secured in its respective implant with a torque of 25 Ncm. All restorations were subjected to thermal aging for 7000 cycles. The loosening torque was assessed utilizing the digital torque meter. Each restoration was subjected to fracture testing and the mode of failure was determined. Results: Zr group displayed the highest mean torque loss value (2.70 ± 0.59 Ncm) with the mean loosening torque value of 22.38 ± 0.68 Ncm. PE group displayed the lowest mean torque loss (2.55 ± 0.50 Ncm) with mean loosening torque value of 22.61 ± 0.59 Ncm. There was no significant difference between study groups regarding loosening torque (p = 0.68), torque loss (p = 0.80), and percentage of torque loss (p = 0.79). There was significant difference regarding the mean fracture load value between Zr and PE groups. However, there was no significant difference (p = 0.05) regarding mean fracture load value between L2 and PE groups. Conclusion: The hybrid-abutment-crown material does not affect the torque maintenance after thermal aging. Based on fracture load, zirconia hybrid-abutment-crown can be used, while lithium disilicate and PEEK hybridabutment-crowns may cautiously serve in premolar region.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid-abutment-restoration: effect of material type on torque maintenance and fracture resistance after thermal aging

2020

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“…In zirconia abutments, however, junctional epithelium was significantly shorter than titanium one-piece abutments [51]. Ongun et al measured the mechanical properties of these hybrid-type abutments including titanium bases, showing that PICN had lower fracture resistance and weaker adhesion to resin cements compared with lithium disilicate ceramic [52]. Such mechanical failure of PICN hybrid-type abutments could also cause the soft tissue seal to break.…”

Section: Materials For Abutmentmentioning

confidence: 99%

Biological Responses to the Transitional Area of Dental Implants: Material- and Structure-Dependent Responses of Peri-Implant Tissue to Abutments

et al. 2019

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The stability of peri-implant tissue is essential for the long-term success of dental implants. Although various types of implant connections are used, little is known about the effects of the physical mechanisms of dental implants on the stability of peri-implant tissue. This review summarizes the relevant literature to establish guidelines regarding the effects of connection type between abutments and implants in soft and hard tissues. Soft tissue seals can affect soft tissue around implants. In external connections, micromobility between the abutment and the hex component of the implant, resulting from machining tolerance, can destroy the soft tissue seal, potentially leading to microbial invasion. Internal friction connection implants induce strain on the surrounding bone via implant wall expansion that translates into masticatory force. This strain is advantageous because it increases the amount and quality of peri-implant bone. The comparison of internal and external connections, the two most commonly used connection types, reveals that internal friction has a positive influence on both soft and hard tissues.

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“…They highly recommend the use of lithium disilicate ceramics as custom-made hybrid implant abutments regarding their fracture resistance and bond strength. 51 The first null hypothesis stating that the technique of construction would not affect the retention of abutments on Ti-Base was rejected. Lithium disilicate ceramics have been known by two techniques of construction; either by CAD/ CAM or Pressing technology.…”

Section: Discussionmentioning

confidence: 99%

Effect of different fabrication materials and techniques on the retention of implant meso-structures to Ti-base abutments

El-Sayed

Elbanna

2021

Egyptian Dental Journal

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Objectives:The aim of this in-vitro study was to evaluate the effect of the material and the manufacturing technique on the retention of the meso-structure to the Ti-base after artificial thermocycling aging. Materials and Methods:Forty implant analogs compatible with the Noble Biocare Replace CC regular platform implant system (Dess, Spain) were used in this study to simulate the replacement of an upper second premolar. Implant analogues were placed in epoxy resin moulds. Ti-bases were screwed to the implant analogues. Ti-bases of different groups were scanned using CAD/ CAM scanner and the design of implant abutments was performed using CAD/CAM software. The abutment had two holes with 1 mm diameter in the mesial and distal surfaces to engage a stainlesssteel wire to facilitate the pull-out testing. The samples were divided into 5 equal groups (n=8) according to the material and technique of construction of the meso-structure as follows: Group I (Zr CAD): CAD/CAM milled zirconia abutments, Group II (E.max Press): Pressable lithium disilicate abutments with 3D printed resin pattern, Group III (E.max CAD): CAD/CAM milled lithium disilicate abutments, Group IV (PEEK CAD):CAD/CAM milled PEEK abutments, Group V (PEEK Press): 3D-printed resin pattern were fabricated and PEEK (BioHPP, Bredent, Germany) was directly pressed on the Ti-base using a thermal moulding machine (For 2 Press, Bredent, Germany) to fabricate the abutments. The samples of each group were surface treated and cemented to the respective Ti-bases according to the manufacturer's instructions of each material. All the samples were subjected to a total of 10,000 thermal cycles between 5°C and 55°C to simulate thermal fluctuations intraorally. All samples were subjected to pull-out retention test after thermal aging to separate the abutments from the Ti-base. After pull-out testing, the surfaces of the Tibases and the internal surfaces of the abutments were photographed under high magnification using digital camera to analyze the mode of failure.

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A Comparative Study on the Mechanical Properties of a Polymer-Infiltrated Ceramic-Network Material Used for the Fabrication of Hybrid Abutment

Cited by 14 publications

References 51 publications

Hybrid-abutment-restoration: effect of material type on torque maintenance and fracture resistance after thermal aging

Hybrid-abutment-restoration: effect of material type on torque maintenance and fracture resistance after thermal aging

Biological Responses to the Transitional Area of Dental Implants: Material- and Structure-Dependent Responses of Peri-Implant Tissue to Abutments

Effect of different fabrication materials and techniques on the retention of implant meso-structures to Ti-base abutments

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