Retentive Characteristics of a Polyetheretherketone Post-Core Restoration with Polyvinylsiloxane Attachments

Li, Ping; Hasselbeck, Dorina; Unkovskiy, Alexey; Sharghi, Feraydoon; Spintzyk, Sebastian

doi:10.3390/polym12092005

Cited by 9 publications

(10 citation statements)

References 31 publications

(46 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Data were collected and recorded using computer software (Bluehill Instron) 29 . A 500 N load cell at a crosshead speed of 50 mm/min, which is equal to the estimated speed of denture replacement during chewing until complete separation, was used to measure the retentive force 30 . The denture's geometric center cylinder was attached to the dynamic part of the Instron via a wire.…”

Section: Methodsmentioning

confidence: 99%

Retention of Different Attachment Systems for Digitally Designed Mandibular Implant Overdenture

Abdelaziz

Fawzy

Ghali

et al. 2022

Journal of Prosthodontics

View full text Add to dashboard Cite

Purpose: Primary retention and gradual loss of retention of different attachment systems are important key factors in proper attachment selection; however, studies on attachment retention show a wide range of retention values concerning the same attachment system. This in vitro study uses a novel approach that utilizes a digitally designed and 3D-printed reinforced overdenture, which has a digitally determined geometric center, in order to standardize results for future research and clinical work. This study aims to evaluate initial retention along with the gradual loss of retention at different time intervals between three types of stud attachments, retaining a digitally designed, reinforced mandibular overdenture after 5475 cycles simulating 5 years of attachment usage. Materials and Methods: An epoxy model of an ACP Class I (American College of Prosthodontists) edentulous mandible was constructed. A fully computer-designed surgical guide was employed after virtual denture design to place two implants according to prosthetically driven implant placement protocol. A metal meshwork with tissue stops was designed digitally to reinforce the denture and to carry the geometric center. The meshwork was incorporated into the denture-intaglio surface, which was planned for attachment pickup. Forty-eight digitally designed and metal-reinforced 3D-printed dentures were divided into four groups (12 dentures for each group). Loss of retention was measured to compare two novel Locator attachments (12 pairs of Locator R-TX, 12 pairs of Locator F-TX medium and low retention, with 12 pairs of ball and socket). Each group was subjected to an insertion and removal fatigue test resembling 5 years of patient usage. Retention values were recorded using a universal testing machine. Results: Locator F-TX medium and low retention showed loss of retention by 91.93% and 92.91%, after fatigue testing equivalent to 2 and 3 years of use, respectively. Ball and socket and Locator R-TX showed loss of retention by 19.87% and 26.31%, respectively, after fatigue testing equivalent to 5 years of use. Conclusions: Locator R-TX attachment systems showed promising retention for implant overdentures compared to ball and socket attachments. The proposed digital technique of denture reinforcement is capable of standardizing results for research and clinical work.

show abstract

Section: Methodsmentioning

confidence: 99%

Retention of Different Attachment Systems for Digitally Designed Mandibular Implant Overdenture

Abdelaziz

Fawzy

Ghali

et al. 2022

Journal of Prosthodontics

View full text Add to dashboard Cite

show abstract

“…Various polymeric materials are used in overdenture attachments (as shown in Table 1 ), including polyvinylsiloxane (PVS) [ 6 ], polymethyl-methacrylate (PMMA) [ 7 ], plastic resin, Hostaform (polyoxymethylene copolymer) (POM) [ 8 ], nylon resin, and DuPont Zytel [ 8 ]. Plastic resin is commonly used for ball and bar attachments, whereas nylon resin is commonly used in locator attachments.…”

Section: Polymeric Materials Used For Overdenturementioning

confidence: 99%

“…Recently, polyether ether ketone (PEEK) and polyether ketone ketone (PEKK) have been widely used in implant and restorative dentistry [ 56 , 57 ]. Li et al [ 6 ] evaluated the retention of PEEK post-core restoration with polyvinylsiloxane (PVS) attachment systems ( Figure 5 ), and their cyclic dislodgement test showed an inverse linear relationship between cyclic times and retention force. The PVS’s retention was enhanced with an increase in Shore hardness, thus showing a favorable retention force.…”

Section: Recent Advances and Future Perspectivesmentioning

confidence: 99%

See 1 more Smart Citation

Biomechanical Aspects of Various Attachments for Implant Overdentures: A Review

et al. 2021

View full text Add to dashboard Cite

There have been considerable recent technological developments for implant overdenture attachments. This study presents an overview of the biomechanical and biomolecular aspects of various attachments for implant overdenture. Available articles on attachments for implant overdenture were reviewed from January 1980 to August 2021 in the ScienceDirect, MEDLINE/PubMed, and Web of Science resources, and relevant studies were included in this study. We focused on the following topics: attachment systems, retention of various attachments, stress distribution with different attachments, the design and fabrication of attachments, digital techniques in overdenture attachments, and the effects of attachments in peri-implant health. We found that plastic resin is commonly used for ball and bar attachments, whereas nylon resin is commonly used in locator attachments. The locator system offers a valuable attachment option for implant-retained overdenture. Attachment retention reduces while lateral force increases with implant inclination in overdenture. The higher the retention of an overdenture attachment, the higher the transferred stresses. Additionally, clip loading produces more stress in implants and precision elements than bar-retained dentures. As such, we conclude that the ball and locator systems the best overdenture systems due to their superior tissue response, survival rate, and patient satisfaction.

show abstract

“…Schweyen evaluated the retentive force of Locator ® and vinylpolysiloxane attachments after a fatigue test and thermal undulation, and discovered that the Locator ® showed a considerable decline in retention forces, while the PVS groups showed no change in retention forces [22]. Li investigated PEEK post-core restoration with PVS attachment systems and discovered the slightly decrease in retention force value in the strong linear relationship with cyclic time [31]. Furthermore, according to a study conducted by Arnold, the thermocycling procedure reduced the average retention force by 33% in Novaloc ® when compared with baseline values [32].…”

Section: Discussionmentioning

confidence: 99%

Effect of Various Retentive Element Materials on Retention of Mandibular Implant-Retained Overdentures

2022

View full text Add to dashboard Cite

This study aimed to examine the retentive characteristics of each retentive element material and the effects from thermocycling using the two implant-retained mandibular overdenture model. Two stud abutments and three retentive element materials; nylon, polyetheretherketone (PEEK) and polyvinylsiloxane (PVS) were used in this study. Four tested groups, with a total of 40 overdentures, were fabricated, including a Locator® abutment with nylon retention insert (NY), Novaloc® abutment with PEEK retention insert (PK), Locator® abutment with PVS retention insert (RL), and Novaloc® abutment with PVS retention insert (RN). The retentive force (N) was measured before thermocycling, and at 2500, 5000, and 10,000 cycles after thermocycling. Significant changes in the percentage of retention loss were found in the NY and PK groups (p < 0.05) at 6 and 12 months for the RL group (p < 0.05) after artificial aging. The RN group exhibited a constant retentive force (p > 0.05). The tendency of the percentage of retention loss significantly increased for PEEK, nylon, and PVS silicone over time. The results of the present study implied that retentive element materials tend to lose their retentive capability as a result of thermal undulation and water dispersion. Nylon and PEEK, comprising strong polar groups in polymer chains, showed a higher rate of retention loss than polyvinylsiloxane.

show abstract

Retentive Characteristics of a Polyetheretherketone Post-Core Restoration with Polyvinylsiloxane Attachments

Cited by 9 publications

References 31 publications

Retention of Different Attachment Systems for Digitally Designed Mandibular Implant Overdenture

Retention of Different Attachment Systems for Digitally Designed Mandibular Implant Overdenture

Biomechanical Aspects of Various Attachments for Implant Overdentures: A Review

Effect of Various Retentive Element Materials on Retention of Mandibular Implant-Retained Overdentures

Contact Info

Product

Resources

About