Effect of mandibular bone atrophy on maxillary and mandibular bone remodeling and quality of life with an implant-retained mandibular overdenture after 3 years

Schuster, Alessandra Julie; Possebon, Anna Paula da Rosa; Schinestsck, André Ribeiro; Chagas-Júnior, Otacílio Luiz; Faot, Fernanda

doi:10.1016/j.prosdent.2021.08.019

Cited by 2 publications

(1 citation statement)

References 35 publications

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“…Previous research have demonstrated that patient satisfaction significantly increases for up to five years [ 1 ]. Notably, individuals with atrophic jaws, as classified by the Cawood and Howell criteria, experienced substantial improvements in quality of life [ 2 ]. The role of primary implant stability is crucial, especially in challenging cases like those with atrophic edentulous mandibles.…”

Section: Introductionmentioning

confidence: 99%

Influence of implant distribution on the biomechanical behaviors of mandibular implant-retained overdentures: a three-dimensional finite element analysis

Liao,

Cao,

Zhong

et al. 2024

BMC Oral Health

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Objective To assess stress distribution in peri-implant bone and attachments of mandibular overdentures retained by small diameter implants, and to explore the impact of implant distribution on denture stability. Methods Through three-dimensional Finite Element Analysis (3D FEA), four models were established: three models of a two mandibular implants retained overdenture (IOD) and one model of a conventional complete denture (CD). The three IOD models consisted of one with two implants in the bilateral canine area, another with implants in the bilateral lateral incisor area, and the third with one implant in the canine area, and another in the lateral incisor area. Three types of loads were applied on the overdenture for each model: a 100 N vertical load and a inclined load on the left first molar, and a100N vertical load on the lower incisors. The stress distribution in the peri-implant bone, attachments, and the biomechanical behaviors of the overdentures were analyzed. Results Despite different distribution of implants, the maximum stress values in peri-implant bone remained within the physiological threshold for all models across three loading conditions. The dispersed implant distribution design (implant in the canine area) exhibited the highest maximum stress in peri-implant bone (822.8 µe) and the attachments (275 MPa) among the three IOD models. The CD model demonstrated highest peak pressure on mucosa under three loading conditions (0.8188 Mpa). The contact area between the denture and mucosa of the CD model was smaller than that in the IOD models under molar loading, yet it was larger in the CD model compared to the IOD model under anterior loading. However, the contact area between the denture and mucosa under anterior loading in all models was significantly smaller than those under molar loading. The IOD in all three models exhibited significantly less rotational movement than the complete denture. Different implant positions had minimal impact on the rotational movement of the IOD. Conclusion IOD with implants in canine area exhibited the highest maximum stress in the peri-implant bone and attachments, and demonstrated increased rotational movement. The maximum principal stress was concentrated around the neck of the small diameter one-piece implant, rather than in the abutment. An overdenture retained by two implants showed better stability than a complete denture.

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Section: Introductionmentioning

confidence: 99%

Influence of implant distribution on the biomechanical behaviors of mandibular implant-retained overdentures: a three-dimensional finite element analysis

Liao,

Cao,

Zhong

et al. 2024

BMC Oral Health

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Four locator attachments of mandibular implant‐retained overdentures with two different distributions: A 10‐year retrospective preliminary study of residual alveolar ridge changes

El‐Sawy,

Swedan,

Hegazy

2024

J Esthet Restor Dent

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ObjectivesThere is little information on the long‐term function of the four Locator attachment of the mandibular implant retained overdenture (OD), particularly with different distributions.PurposeTo compare the effect of different four inter‐foraminal implant distributions retaining a mandibular OD after 10 years of function on posterior mandibular ridge resorption (PMandRR), anterior maxillary ridge resorption (AMaxRR), and the amount of marginal bone loss (MBL) around all four implants.Materials and MethodsTwenty‐two participants with total edentulism who had worn mandibular OVDs retained by four inter‐foraminal implants for 10 years of functional life were selected for this study. They were divided into two groups based on implant distribution: Group I with a quadrilateral distribution (QD) of implants and Group II with a linear distribution (LD) of implants. PMandRR, AMaxRR, and MBL around implants were measured.ResultsAfter 10 years of function, PMandRR was significantly higher in the LD group than in the QD group (p < 0.001*). There was no significant difference in AMaxRR between the QD and LD groups (p = 0.431). The QD group showed a significantly greater amount of MBL around dental implants when compared with the LD group (p = 0.002*).ConclusionsThe LD of implants demonstrates more PMandRR compared with the QD. The QD of implants demonstrates a greater amount of MBL around dental implants compared with the LD. Both implant distributions demonstrate the same effect on the AMaxRR. MBL around implants remained within normal accepted values after 10 years of function.

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Effect of mandibular bone atrophy on maxillary and mandibular bone remodeling and quality of life with an implant-retained mandibular overdenture after 3 years

Cited by 2 publications

References 35 publications

Influence of implant distribution on the biomechanical behaviors of mandibular implant-retained overdentures: a three-dimensional finite element analysis

Influence of implant distribution on the biomechanical behaviors of mandibular implant-retained overdentures: a three-dimensional finite element analysis

Four locator attachments of mandibular implant‐retained overdentures with two different distributions: A 10‐year retrospective preliminary study of residual alveolar ridge changes

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