Maximum equivalent stress induced and the displacement of the developing permanent first molars after the premature loss of primary second molars: A finite element analysis

Sabeti, Arghavan Kamali; Karimizadeh, Zahra; Rafatjou, Rezvan

doi:10.17219/dmp/122041

Cited by 8 publications

(4 citation statements)

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“…The second primary molars are of the utmost importance in the occlusion, since they have an eruption guide for the eruption of the first permanent molars [16,21]. Several effects of premature space loss are mentioned, such as dental crowding, ectopic eruption, impaction of the permanent tooth, crossbite, center line discrepancies, and, in cases of premature loss of deciduous second molars, tipping of the first permanent molar can occur [16,[22][23][24][25]. Therefore, it is essential to maintain the second primary molar until the first permanent molar tooth and the successor erupt successfully.…”

Section: Discussionmentioning

confidence: 99%

A Four-Year Follow-Up Case Report of Hypomineralized Primary Second Molars Rehabilitated with Stainless Steel Crowns

2021

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Hypomineralized primary second molars (HPSM) are characterized by enamel opacities accompanied by hypersensitivity and atypical caries lesion, on one to four primary second molars. The correct treatment and follow-ups of those teeth have an important impact on a correct eruption of the first permanent molars and future occlusion. Hence, this report aims to describes a case of a severe HPSM in all second molars of a four-year-old girl and subsequent four-year follow-ups. The rehabilitation involved the placement of four stainless steel crowns on all four second primary molars under general anesthesia. Concerning the available literature and the case severity of HPSM, the treatment approach proposed for the case provided good functional outcome.

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Section: Discussionmentioning

confidence: 99%

A Four-Year Follow-Up Case Report of Hypomineralized Primary Second Molars Rehabilitated with Stainless Steel Crowns

2021

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“…Young Modulus (Mpa) Poisson Ratios Enamel 41,000 0.30 [14] Dentin 18,600 0.31 [14] Periodontal Ligament 50 0.49 [15] Cortical Bone 13,700 0.30 [14] Cancellous Bone 1400 0.30 [14] Stainless Steel 210,000 0.30 [16] Glass Ionomer Cement 12,000 0.25 [17] F the displacement field between TB, SM and SM-cement layer (0.02 mm) contacts was applied bonded [14]. A friction coefficient of 0.2 was assigned between the tooth and SM [18,19]. A surface-to-surface contact condition was applied to represent the connection between the SM and tooth-bone (TB) complex.…”

Section: Structurementioning

confidence: 99%

Arm design of band and loop space maintainer affects its longevity: a patient-specific finite element study

2024

JOCPD

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Fixed space maintainers (FSMs) are commonly utilized in pediatric dentistry to prevent space loss following premature tooth extraction. Although previous studies have examined the survival rates and causes of FSM failure, the impact of arm design on failure has not been investigated. This study aimed to investigate the tensile and compressive stresses related to FSMs with different arm designs and evaluate the effect of arm designs on FSM failure. Cone beam computed tomography images of a child who experienced premature loss of a primary mandibular left second molar tooth were retrieved from our database, then processed and simulated using the Rhinoceros software. Finite element analysis was performed to evaluate the stresses on four distinct FSM arm designs under simulated chewing forces. The results showed that the straightarm FSM design exhibited the highest von Mises principal stress, while FSMs with curved arms and surrounding primary mandibular left first molar in the mesial area demonstrated the lowest von Mises stress accumulation. Intense stress accumulation on the distal surface of tooth 74 was observed in the test models due to the transmitted forces by the FSM. The maximum principal stresses accumulated at the base of the alveolar socket of the mesial root of tooth 36, while the minimum principal stresses were identified at the mesio-marginal area of the alveolar crest. The arm design played a crucial role in enabling the appliance to effectively withstand the stresses accumulating on the Space maintainer (SM) and orthodontic band. Bending the SM arms to match the surrounding profile with curvature increased the stress absorption capacity by increasing the arm length.

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“…The finite element method made studying the effects of stresses on the bone in patients with cleft lip and palate more applicable. (41) This in turn can give researchers the opportunity for augmenting the appliances used in these cases for obtaining more desirable growth patterns and results.…”

Section: Cleft Lip and Palatementioning

confidence: 99%

The Finite Element Analysis And Its Application In Pediatric Dentistry. A Narrative Review.

Bayoumi

2023

Alexandria Dental Journal

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BACKGROUND:The finite element analysis (FEA) or the finite element method (FEM) is a numerical method that is used to solve problems in engineering and mathematical physics. It has been introduced to the dental field and has been used in different dental specialties for the reason of scientific research, in order to test for stress and strain on different dental materials. It has been also used to test for different loads applied on hard and soft tissues in the oral cavity. PURPOSE: The purpose of this review will be to understand the FEM and how it is used in different research fields including its application in dentistry. CONCLUSION: Operating the FEM in dentistry has given it a big leap forward. Researchers could test virtually the stresses exerted upon any of the craniofacial structures. This may give rise to yet considerable evidence and may lead to the invention of new materials and appliances serving all scopes of pediatric dentistry. However, further clinical trials will be needed to support the results from this simulation software and provide evidence-based results.

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Maximum equivalent stress induced and the displacement of the developing permanent first molars after the premature loss of primary second molars: A finite element analysis

Cited by 8 publications

References 0 publications

A Four-Year Follow-Up Case Report of Hypomineralized Primary Second Molars Rehabilitated with Stainless Steel Crowns

A Four-Year Follow-Up Case Report of Hypomineralized Primary Second Molars Rehabilitated with Stainless Steel Crowns

Arm design of band and loop space maintainer affects its longevity: a patient-specific finite element study

The Finite Element Analysis And Its Application In Pediatric Dentistry. A Narrative Review.

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