Thermal Analysis of Dental Implants in Mandibular Premolar Region: 3D FEM Study

Arshad, Somayye Rabbani; Oskui, Iman Z.; Hashemi, Ata

doi:10.1111/jopr.12486

Cited by 9 publications

(13 citation statements)

References 22 publications

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“…The former model assumed two materials (zirconia and ceramic) and the latter had no crown. Exposing these FE models to heat loads showed that the ceramic crown exhibits the diffusion of the heat through the deeper implant parts and the surrounding bone [15]. However, their calculated temperature magnitudes, specifically at the BII in delayed-loading implantation type (without crown), were considerably low in comparison with the experiments that applied the same condition [15].…”

Section: Introductionmentioning

confidence: 98%

“…Naturally, the cells are recruited to form the bone unless in disorders [14], or severe external conditions e.g. mechanical over-or unloading of the implant [9], extreme heat exposing [15], etc. The heat exposing to the implant is daily and repetitive by beverage of hot liquids or eating hot foods which may adversely affect the osteointegration process.…”

Section: Introductionmentioning

confidence: 99%

“…They found that the maximum temperature occurs near the abutment and the apical and mid-length BII receive relatively lower temperatures but exceed the vitality thresholds [19]. Rabbani Arshad et al (2016) used a tran-sient FE method to analyze the distribution of temperature through the dental implants with immediately-and delayed-loaded approaches. The former model assumed two materials (zirconia and ceramic) and the latter had no crown.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Cyclic Thermal Loads on Bone-Implant Interface in Dental Prostheses

Babayi

Ashtiani

2017

Zahedan J Res Med Sci

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Background: Consumption of hot substances may harm the surrounding bone around a dental implant. High temperatures at the bone-implant interface (BII) interferes with local cellular activities involved in the osteointegration. Objectives: The present study was aimed at calculating the temperature distribution through the BII and the jaw bone under application of a transient cyclic thermal load. Methods: In this numerical simulation, finite element method was employed in a commercialized dental implant model drawn by computer-aided design tools based on CT data to find the temperature in superficial and deep bone regions near the BII. The heat load was applied cyclically during the intake time. Results: Results showed that the highest temperature was occurred at the top regions of the interface by magnitude of 48 C. Removal of the thermal loads also was followed by rapid decrease in the bone temperature. Conclusions: Routine beverages of a hot liquid can increase the temperature of the bone beyond the biological thresholds of the bone cells vitality or remodeling functionality, specifically in the delayed loading types of implantation.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Cyclic Thermal Loads on Bone-Implant Interface in Dental Prostheses

Babayi

Ashtiani

2017

Zahedan J Res Med Sci

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“…For a derivation of the heat equation, the interested reader may consult Appendix A. An additional source term q(t) = m (T-Ts), where m is a constant depending on the type and the geometry of the implant, may be added to take into account the temperature excess due to the thermal loading [25,26].…”

Section: Formulation Of the Physical Problemmentioning

confidence: 99%

“…Thus, the transient heat transfer under thermal load is of vital significance in dentistry, in general, and in practical oro-dental implantology, in particular. In the literature, there already exist some previous works on the subject, where the authors attempted to model and investigate the effects of "thermal load(s)" on the bone-implant interface system [24][25][26][27][28] (see, however, e.g., [29,30] for heat transfer from warm water to foot in a footbath). In this work, our approach is distinct in two main respects: (1) firstly, in the other studies, authors tend to solve the heat equation with a source term that accounts for the temperature excess T-Ts, with (T) being the temperature at a given point and (Ts) being the temperature from the surroundings.…”

Section: Introductionmentioning

confidence: 99%

Thermal Load and Heat Transfer in Dental Titanium Implants: An Ex Vivo-Based Exact Analytical/Numerical Solution to the ‘Heat Equation’

Panotopoulos

Haidar

2022

Dentistry Journal

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Introduction: Heat is a kinetic process whereby energy flows from between two systems, hot-to-cold objects. In oro-dental implantology, conductive heat transfer/(or thermal stress) is a complex physical phenomenon to analyze and consider in treatment planning. Hence, ample research has attempted to measure heat-production to avoid over-heating during bone-cutting and drilling for titanium (Ti) implant-site preparation and insertion, thereby preventing/minimizing early (as well as delayed) implant-related complications and failure. Objective: Given the low bone–thermal conductivity whereby heat generated by osteotomies is not effectively dissipated and tends to remain within the surrounding tissue (peri-implant), increasing the possibility of thermal-injury, this work attempts to obtain an exact analytical solution of the heat equation under exponential thermal-stress, modeling transient heat transfer and temperature changes in Ti implants (fixtures) upon hot-liquid oral intake. Materials and Methods: We, via an ex vivo-based model, investigated the impact of the (a) material, (b) location point along implant length, and (c) exposure time of the thermal load on localized temperature changes. Results: Despite its simplicity, the presented solution contains all the physics and reproduces the key features obtained in previous numerical analyses studies. To the best of our knowledge, this is the first introduction of the intrinsic time, a “proper” time that characterizes the geometry of the dental implant fixture, where we show, mathematically and graphically, how the interplay between “proper” time and exposure time influences temperature changes in Ti implants, under the suitable initial and boundary conditions. This fills the current gap in the literature by obtaining a simplified yet exact analytical solution, assuming an exponential thermal load model relevant to cold/hot beverage or food intake. Conclusions: This work aspires to accurately complement the overall clinical diagnostic and treatment plan for enhanced bone–implant interface, implant stability, and success rates, whether for immediate or delayed loading strategies.

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