The Influence of Palatal Coverage on the Retention Force and Fatigue Resistance of Mini Dental Implant Maxillary Overdenture

Mekawy, Nesreen El; Khalifa, Ahmed Khalifa

doi:10.4172/2332-0702.1000200

Cited by 8 publications

(6 citation statements)

References 11 publications

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“…[ 6 ] Bar–clip constructions or nonsplinted concept attachments are used for retaining these overdentures. [ 7 ] Literature demonstrated the use of telescopic attachments as a retentive aid in implant-supported overdentures. The main effect of these attachments is transmission of occlusal forces along the long axis of abutment, and hence ensures the long life of prostheses.…”

Section: Discussionmentioning

confidence: 99%

An In vitro Assessment of Retention Force of ZrO2, Polyether Ether Ketone, and ZrO2-Polyether Ether Ketone Telescopic Attachment for Mandibular Overdentures

Jena

Kumari²,

Agarwal

et al. 2022

Journal of Pharmacy and Bioallied Sciences

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Objectives: The objective of this study was to compare ZrO 2 , polyether ether ketone (PEEK), and ZrO 2 -PEEK telescopic attachments in terms of retention of overdenture. Methodology: Forty-five acrylic resin models of the lower arch were divided into 3 groups of 15 each. In Group I, primary and secondary crowns were constructed from all zirconia (ZrO 2 ), whereas all PEEK was used for Group II and Group III was made up of ZrO 2 PEEK. Results: The mean retention value in Group I was 14.12 ± 3.4 N, in Group II was 15.86 ± 5.1, and in Group III was 22.40 ± 10.3 N. The mean final initial retention value in Group I was 14.50 ± 6.1 N, in Group II was 14.97 ± 8.2, and in Group III was 17.21 ± 9.3 N. A significant difference was observed in intergroup comparison ( P < 0.05). Conclusion: Zirconia resulted in maximum retention as compared to other telescopic crown materials.

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Section: Discussionmentioning

confidence: 99%

An In vitro Assessment of Retention Force of ZrO2, Polyether Ether Ketone, and ZrO2-Polyether Ether Ketone Telescopic Attachment for Mandibular Overdentures

Jena

Kumari²,

Agarwal

et al. 2022

Journal of Pharmacy and Bioallied Sciences

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“…Although numerous studies have shown that the palate less four-implant retained maxillary overdenture is a simple and effective solution and leads to significant improvement of patient-based outcomes. (4)(5)(6)(7) The increased load concentration over the implants may cause loosening of the attachments mucosal ulceration and implant overload (10)(11)(12) .…”

Section: Discussionmentioning

confidence: 99%

“…(1)(2)(3) Numerous studies have shown that U-shaped palate-less maxillary implant-retained overdenture is an effective solution and leads to significant improvement of patient-based outcomes, increased quality of life, and provide easier access for oral hygiene. (4)(5)(6)(7) A systematic review on maxillary implant-retained overdentures showed that there are no specific guide lines for the number of implants necessary to support a maxillary implant-retained overdenture. Some authors have reported clinical success as determined by survival of prostheses and implants in treating patients with a palate-less maxillary implant-retained overdenture with a minimum of 4 supporting implants, while others recommended the use of palatal coverage when 4 or less implants are used.…”

Section: Introductionmentioning

confidence: 99%

Tomographic Assessment of reinforcement of acrylic resin denture base for palateless implant locator retained maxillary over denture.

Alam

El-Sayed

2021

Egyptian Dental Journal

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Objectives: This study was conducted to evaluate the effect of metallic (cobalt chromium), glass fiber and nano zirconia oxide reinforcement of acrylic resin denture base on the peri-implant crestal bone level changes in palateless locator retained maxillary over denture.Materials and Methods: Twenty-one completely edentulous male patients with maladaptive experience to maxillary dentures were selected to participate in this study. For all patients maxillary four implant-retained overdenture was constructed following the same basic principles. Every patient received four implants, two in the canine region with (3.6 mm in diameter & 12mm in length), and two in the second premolar region with (4.5 mm in diameter & 8mm in length); (Tiologic® Implants, Dentaurum, Ispringen, Germany) following the two stage surgical technique. Metal (cobalt chromium) reinforced over denture was constructed for the first group, while 5% fiber reinforced acrylic resin denture was constructed for the second group and Overdenture was reinforced using 5% of nano ZrO 2 for the group three patients. . Follow up visits were scheduled twelve and twenty four after implant loading for inspection of the prosthesis and radiographic evaluation Peri-implant crestal bone level changes were assessed using intra-oral radiographs taken with the standardized long cone paralleling technique using custom made acrylic template and the Rinn-xcp system. Results:The findings of the present study demonstrates that all the studied denture base reinforcement materials individually showed significance bone loss around implants (p< 0.05) after 12 months follow up period. Insignificant increase in the calculated means the peri-implant bone height changes of was evident during the intervals 12 -24. Group I Metal (cobalt chromium) reinforced heat cured acrylic resin denture showed more peri-implant bone loss compared to group II glass fiber and group III nano zirconia oxide reinforced acrylic resin denture base reinforcement. Although group II glass showed more peri-implant bone loss compared to group III glass during the follow up period statistically in significant difference between the two studied groups was found Conclusion: Within the limitations of this study, reinforcement of polymethyl methacrylate denture base with glass fiber or nano zirconia oxide should be considered in palateless implant retained maxillary over denture. Further clinical studies for newest reinforcement materials are necessary to ensure the effect of reinforcement within dental prostheses.

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“…Before retention evaluation, artificial saliva (Saliveze TM -Wyvern Medical LTD-UK) was applied to the models and the inner side of the overdentures framework to mimic the oral environment [26]. Retention was estimated by a digital force gauge (Nextech DFS500-Nextech Global-Thailand) used to record maximum dislodging forces [27], [28] (Fig.…”

Section: Retention Evaluation Processmentioning

confidence: 99%

Retention Evaluation of Implant-Supported Palateless Maxillary Overdentures Retained by PEEK Telescopic Attachment

Qadir

Othman

Mahmood

2023

EJDENT

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Background: Retention and stabilization of implant-supported overdenture is associated with more patient satisfaction, chewing capability, and oral health-related quality of life. There are a variety of implant retention systems which can be utilized to retain an implant overdenture. Telescopic attachments provide excellent retention resulting from friction. Objective: This study evaluates the retention force and fatigue resistance of ready-made polyether ether ketone (PEEK) telescopic attachment in different numbers and positions of dental implants in palateless maxillary overdenture. Method: Five edentulous maxillary models were fabricated from cold-cure poly methyl methacrylate resin. The study models were divided into two groups; the first group (3-implant supported overdenture) and the second group (4-implant supported overdenture). Each group is subdivided into subgroups according to the different implant positions. One palateless maxillary denture was constructed over each model. Ready-made PEEK telescope attachments correspond to implant abutments embedded in the inner surface of these overdentures. Initial anterior, posterior, and central retention values of overdentures were estimated and compared with the retention after 540 cycles of insertion and removal using a digital force gauge. One-way ANOVA testing was used to compare the means of the models of group one, an Independent sample t-test was used to compare the means of the models of group two, and a comparison of retention value between the groups and Paired sample t-test was applied for determining the difference between initial and secondary retention value (p<0.05). Results: The anterior retention value was significantly decreased when the dental implants were placed distally while the posterior and central retention values were significantly increased. Also, retention value increased as implant number increased; the lowest mean retention values were recorded with Group one and the highest values were with Group two. The final retention value was significantly decreased after 540 times insertion and removal. However, the values of secondary retention are still larger than the minimum retention value that was reported (5–7 N) to achieve sufficient patient satisfaction. Conclusion: The implant location and number affect the retention value of palateless maxillary overdenture. Continuous insertion and removal of the prosthesis for daily hygiene practice lead to decreases in retention values.

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The Influence of Palatal Coverage on the Retention Force and Fatigue Resistance of Mini Dental Implant Maxillary Overdenture

Cited by 8 publications

References 11 publications

An In vitro Assessment of Retention Force of ZrO2, Polyether Ether Ketone, and ZrO2-Polyether Ether Ketone Telescopic Attachment for Mandibular Overdentures

An In vitro Assessment of Retention Force of ZrO2, Polyether Ether Ketone, and ZrO2-Polyether Ether Ketone Telescopic Attachment for Mandibular Overdentures

Tomographic Assessment of reinforcement of acrylic resin denture base for palateless implant locator retained maxillary over denture.

Retention Evaluation of Implant-Supported Palateless Maxillary Overdentures Retained by PEEK Telescopic Attachment

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