An auxiliary factor for increasing the retention of short abutments

AlShaarani, Fendi; Alaisami, Rami; Aljerf, Loai; Jamous, Issam; Elias, Kanaan; Jaber, Anas

doi:10.1016/j.heliyon.2019.e02674

Cited by 18 publications

(5 citation statements)

References 48 publications

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“…As a result, there is less bone resorption and no harm to the supporting structures, resulting in the least likelihood of failure of RBFPD. The grooves included in the design increase the surface area present for bonding, adding to the retentive ability of the prosthesis ( AlShaarani et al, 2019 ). These features ensure the clinical longevity of the prosthesis.…”

Section: Discussionmentioning

confidence: 99%

Comparative Evaluation of Stress Acting on Abutment, Bone, and Connector of Different Designs of Acid-Etched Resin-Bonded Fixed Partial Dentures: Finite Element Analysis

Shaikh

Rai

Aldhuwayhi

et al. 2022

Front. Bioeng. Biotechnol.

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Background: Finite element analysis (FEA) is one of the best methods for evaluating the stress distribution of restorations, such as fixed partial dentures. The development of resin cement has transformed prosthesis bonding and retention properties. Resin-bonded fixed partial dentures (RBFPD) have been considered minimally invasive treatment options for the prosthetic rehabilitation of single missing teeth.Objectives: The aim of this study was to evaluate the stress load and distribution in four different designs of acid-etched RBFPDs using FEA.Materials and Methods: The designs included standard tooth preparation principles and additional features. The first premolar and first molar abutments replaced the missing second premolar. Designs 1, 2, 3, and 4 included (1) lingual wings and occlusal rests; (2) wings and proximal slices; (3) wings, rests, and grooves; and (4) wings, rests, grooves, and occlusal coverage. The prepared models were restored with RBFPDs. A load of 100 N was applied to the central groove of the pontic to simulate occlusal forces. The materials used in the models were considered to be isotropic, homogeneous, and linearly elastic. FEA was used to reveal stresses acting on the abutment, bone, and connector in all prosthesis designs.Results: The stresses transmitted to the abutment and bones were lowest for design 3, using wings, rests, and grooves. The stresses acting on the connector were the weakest in design 2. The stresses transmitted to the abutment and bone were highest in designs 1 and 4. The stresses transmitted to the connector were highest in design 3.Conclusion: The wings, rests, and grooves design is possibly the ideal and conservative tooth preparation design to receive a posterior RBFPD. This design transmits less stress to the abutments and less bone resorption in the FEA. It is most likely to be successful in the clinical provision and ensures the longevity of the prosthesis.

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Section: Discussionmentioning

confidence: 99%

Comparative Evaluation of Stress Acting on Abutment, Bone, and Connector of Different Designs of Acid-Etched Resin-Bonded Fixed Partial Dentures: Finite Element Analysis

Shaikh

Rai

Aldhuwayhi

et al. 2022

Front. Bioeng. Biotechnol.

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“…In the present study, the materials selected for the definitive restorations were zirconia and nickel-chromium alloy for metal crowns. The dies on which they were cemented were made of resin, which exhibits better resiliency than the metal dies utilized in prior studies [ 11 , 23 , 37 , 38 ]. While resin does not precisely mimic tooth tissues in the oral cavity, it still offers better resilience than other substitutes.…”

Section: Discussionmentioning

confidence: 99%

“…The literature suggests that 68.8% of cast restoration failure depends upon mechanical factors (crown preparation, cementation, and materials), while 28.8% of failure depends on biological factors (soft tissue support) [ 11 ]. Additionally, the primary causes of restoration failures were insufficient clinical crown length and the extent of tooth damage before treatment and debonding [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

“…Rajkumar et al [ 22 ] observed an insignificant increase in retention with the addition of a groove. However, using grooves to enhance retention was encouraged, as the retention was increased by 100% when the cast crown was extended into the groove rather than blocked off [ 11 ]. Compared with proximal boxes, proximal grooves yielded a notably increased retention, and including proximal grooves in short preparations resulted in retention comparable to that of a conventional preparation, with sufficient crown height [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

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Impact of Auxiliary Features on Retention of Short Dental Crowns: An In-Vitro Analysis of Box and Groove Preparations

Sayed,

Porwal,

Hamdi

et al. 2024

Med Sci Monit

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Background Several auxiliary features have been proposed to achieve sustainable retention for short-prepared dental crowns; however, achieving retention is challenging. This study aimed to assess the impact of increased total occlusal convergence and auxiliary preparation factors like box and groove on the retention form of short tooth preparations. Material/Methods Eighty resin machine-milled dies with a height of 3 mm and a deep chamfer margin of 1 mm were prepared to mimic the short-prepared molar. Initially, 2 teeth were prepared following the guidelines, and the total occlusal convergence was kept at 10° and 20°, respectively. Auxiliary features such as the proximal box and buccal groove were prepared on separate 20° dies. Eighty dies were prepared with 10 samples each for 10°, 20°, 20° with proximal box and 20° with buccal groove for zirconia (n=40) and metal crowns (n=40). Cementation was done with glass ionomer luting cement, and a pull-off test was conducted. Data were analyzed using one-way analysis of variance and post hoc fisher least significant difference test (P <0.05). Results The highest mean was observed in the proximal box group with the metal crown (14.59), and the lowest in the group with 20° zirconia crowns (9.12). Within groups, the highest retentive values were found for the 20° taper with proximal box preparation; the lowest was for the 20° taper group. Conclusions Within the study limitations, it could be concluded that incorporating a proximal box or buccal groove in short tooth preparations with an increased total occlusal convergence improved retentive values.

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“…As a result, most studies use the PDL of cows [2], pigs [3], or rats [4] as a substitute to study its material properties. There are few tests and discussions on the material characteristics of human PDL [5].…”

Section: Introductionmentioning

confidence: 99%

A visco-hyperelastic constitutive model of human periodontal ligament and the verification with finite element method

Liu

Tang

2022

J. Phys.: Conf. Ser.

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The scientific basis of orthodontics is physics and Newtonian mechanics applied to the tooth-periodontal ligament-bone biologic system. The mechanical response of the periodontal ligament (PDL) to forces has a significant impact on bone remodelling and tooth movement. At the early stages, orthodontists mainly evaluated the PDL mechanical properties by in vitro experiments, which guided the use of forces in the orthodontic process. With the development of computers, finite element (FE) methods were increasingly used in the study of orthodontics. The phenomena and results of PDL mechanical tests are abstracted into constitutive equations. The identified constitutive equations are then implemented in finite element software. The finite element method could be used to simulate in vitro and in vivo experiments and predict the response of PDL under various complex working conditions. A visco-hyperelastic constitutive model is proposed and implemented in finite element technique based on prior static mechanical experiments of human PDL. Some complex experimental conditions are simulated to discuss the properties of the constitutive model.

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An auxiliary factor for increasing the retention of short abutments

Cited by 18 publications

References 48 publications

Comparative Evaluation of Stress Acting on Abutment, Bone, and Connector of Different Designs of Acid-Etched Resin-Bonded Fixed Partial Dentures: Finite Element Analysis

Comparative Evaluation of Stress Acting on Abutment, Bone, and Connector of Different Designs of Acid-Etched Resin-Bonded Fixed Partial Dentures: Finite Element Analysis

Impact of Auxiliary Features on Retention of Short Dental Crowns: An In-Vitro Analysis of Box and Groove Preparations

A visco-hyperelastic constitutive model of human periodontal ligament and the verification with finite element method

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