Thread Shape Research Articles

Thread shape, cortical bone thickness, and magnitude and distribution of stress caused by the loading of orthodontic miniscrews: finite element analysis

Cortical bone thickness is assumed to be a major factor regulating miniscrew stability. We investigated stress distribution in two miniscrews with different thread shapes (type A and B) and in cortical bone of three different thicknesses using three-dimensional (3D) finite element (FE) models. More specifically, 3D FE models of two different miniscrews were created and placed obliquely or vertically into a cylindrical bone model representing different cortical bone thicknesses. When force was applied to the miniscrew, the stress distribution on the screw surface and in the peri-implant bone was assessed using FE methodology. Miniscrew safety was evaluated using a modified Soderberg safety factor. Screw head displacement increased with a decrease in cortical bone thickness, irrespective of screw type. The smallest minimum principal stresses on the screw surfaces remained constant in type A miniscrews on changes in cortical bone thickness. Minimum principal stresses also appeared on the cortical bone surface. Lower absolute values of minimum principal stresses were seen in type A miniscrews when placed vertically and with upward traction in obliquely placed type B miniscrews. Both miniscrews had acceptable safety factor values. Taken together, orthodontists should select and use the suitable miniscrew for each patient in consideration of bone properties.

A 3-D finite element analysis of the effect of dental implant thread angle on stress distribution in the surrounding bone.

Background. This study aimed to evaluate the effect of an increase in fixture thread face angle on the amount and distribution of stresses in the surrounding bone of implants with four different thread shapes by three-dimensional finite element analysis. Methods. Eight different fixture designs, with v-shaped, buttress, reverse buttress, and trapezoid threads, and two face angles of 20 and 35 degrees, were modeled using a software program. Each model was affected by two static forces with different values and angles (200-N axial 0° force and 100-N 45° oblique force) to compare the distribution of stress in different fixture designs. Results. The maximum von Mises stress was detected in v-shaped threads. An increase in the angle of the threads to 35° significantly decreased maximum von Mises stress in cortical bone in v-shaped and reverse buttress threads; however, the von Mises stress in the trapezoid and buttress threads increased with an increase in the thread angle. Conclusion. Under the limitations of this study, although the shape of the thread and thread surface angle does not have a definite role in stress distribution in the bone surrounding the implant, they are effective in the amount and type of stress induced in the bone supporting the implant.

COMPUTER IMPLEMENTATION OF DAKYSTRE’S ALGORITHM FOR DETERMINING THE FORM OF THREAD REFILLING ON THE BASIS OF SEARCHING FOR THE OPTIMAL PATH OF THE GRAPH

Minimization of thread tension during processing on technological machines allows to reduce the probability of breakage in the working area. This is achieved by optimizing the geometric parameters of the thread feed system on process equipment, namely obtaining such a broken thread shape, in which the total angle of coverage of structural structural elements of process equipment in the form of cylindrical guides and torus, elements of tensioning devices will have a minimum value. This will reduce the amount of friction between the thread and the guide surfaces and get the minimum tension in the working area. Given the large number of structural elements of the thread feed system on technological machines, their location in the plane and space, there is a need to use modern information technology. Implementing this requires the use of algorithms and computer programs to find the optimal path of the graph using the Dijkstra algorithm. Determining the tension and changes in relative tension in the refueling zones of technological machines, taking into account the specifics of the design of the thread feed system, will reduce thread breakage, optimize t Improving the process of thread processing on technological machines of light industry is to minimize tension and should be based on theoretical and experimental studies of the interaction of threads with structural elements of the feed system, including tensioning devices, breakage control and guides of large and small curvature. Imperfect shape of the thread filling line on technological machines of light industry, low quality of complex threads and yarn with increasing tension along the depth of filling leads to their breakage.hread tension in the working area of the source product.

КОНЕЧНО-ЭЛЕМЕНТНЫЙ АНАЛИЗ ИМПЛАНТАТОВ СИСТЕМЫ HUMANA DENTAL С ИННОВАЦИОННОЙ ПОВЕРХНОСТЬЮ И ДИЗАЙНОМ РЕЗЬБЫ ДЛЯ ВЫЯВЛЕНИЯ РАСПРЕДЕЛЕНИЯ НАПРЯЖЕНИЙ В ИМПЛАНТАТЕ, КОСТНОЙ ТКАНИ И В СОЕДИНЕНИИ АБАТМЕНТ – ИМПЛАНТАТ – КОСТЬ

This article presents the results of mathematical modeling of the stress-strain state of the finite element analysis of the justification for the use of Humana Dental implants with an innovative surface microstructure and thread design parameters during dental implantation. As a result of the study, after placing the implants in the created three-dimensional model, consisting of trabecular and cortical bones, it was revealed that the angle of implant placement significantly affects the distribution of stress in the bone. The rough, well-structured surface improves the contact of the implant with the bone. The stress distribution on dental implants with different geometry and thread design was revealed, and the most effective thread parameters for uniform load distribution were determined.
 Aim. Substantiation of the use of Humana Dental implants with innovative macro-microstructure of the surface and thread design parameters during dental implantation in various clinical situations.
 Material and methods. Samples of BioSink and Vega implants from Humana Dental were studied to assess the stress distribution by mathematical modeling of the stress-strain state in the cortical and spongy bone surrounding two models of implants with a diameter of 4.2 mm and a length of 11.5 mm, as well as with a different thread shape design. The implants were installed in the created three-dimensional model strictly vertically and at an angle of 30°. Geometric models were built in CAD Catia V5, the calculation was carried out in the software package Ansys R19.2.
 Resalts. As a result of the study, it was revealed that in all cases the maximum concentration of stresses falls on the cortical layer of bone near contact with the implant, and in the spongy bone with vertical installation, maximum stresses in all cases are reached near the lower part of the implant. The peak voltage in the cortical bone was highest in the threaded part of the implants. When changing the angle of installation of the implant, the maximum voltages can increase many times, but when changing the thread pitch, only small fluctuations in voltages are noted, which do not fit into any trend. In the peri-implant region, the cortical bone showed a higher concentration of tension than the spongy bone.
 Conclusions. The use of finite element analysis made it possible to identify the stress distribution on dental implants with different thread geometries and designs and to determine the most effective thread parameters for uniform load distribution.

The Mechanical Behavior of Taper Pipe Threads by Three-dimensional Finite Element Analysis

Taper pipe threads are widely used as fastening parts for connecting pipes through which water, gas, hydraulic oil, etc. flow. It is also widely used in underground conduit facilities to protect underground communication cables from external loads and fluids. One of its characteristics is its high tightness, but there have been reports of leaks and damage due to strong external forces and repeated loads at the time of earthquakes and under even normal use conditions. However, since the mechanical behavior of tapered pipe screws is more complicated than that of ordinary fastening bolts, it is difficult to perform a highly accurate analysis. Therefore, in this study, in order to clarify the mechanical behavior of taper pipe threads, we created a three-dimensional analysis model of hexahedral elements that faithfully reproduces the shape of taper pipe threads, and quantitatively evaluated the effects of parameters such as pipe thickness, coefficient of friction, and number of screwing threads on resistance to external forces. The purpose is to clarify the mechanical properties systematically, and we have elucidated the trends of the parameters on the stress amplitude in three different cyclic load modes.

Mechanical stability of orthodontic miniscrew depends on a thread shape

Background/purposePrimary stability of orthodontic miniscrew system is of great importance in maintaining stable anchorage during a treatment period. Thus, this study aimed to examine whether the thread shape of orthodontic miniscrew had an effect on its mechanical stability in bone. Materials and methodsThree different types of miniscrews (type A and B with a regular thread shape; type C with a novel thread shape) were placed in artificial bone block with different artificial cortical bone thickness of 1.5, 2.0 and 3.0 mm. Values of maximum insertion torque (MIT), removal torque (RT), torque ratio (TR), screw mobility, static stiffness (K), dynamic stiffness (K∗) and energy dissipation (tan δ) ability were assessed for each miniscrew system. ResultsThe MIT, RT, TR and K of type C miniscrew were significantly greater than those of type A and B miniscrews when the miniscrews were placed in the thinner artificial bone. Furthermore, the TR value of type C miniscrew was more than 1, indicating the MRT value was larger than the MIT value in the novel miniscrew. The values of K∗ and tan δ were almost similar among the three types of miniscrews. ConclusionThe miniscrew with a novel thread shape showed a higher initial stability compared to those with a regular thread shape. Thus, in order to obtain a sufficient initial stability, it is important to select the type of screw thread that is appropriate for the thickness of the cortical bone.

Three-Dimensional Finite Element Investigation into Effects of Implant Thread Design and Loading Rate on Stress Distribution in Dental Implants and Anisotropic Bone

Variations in the implant thread shape and occlusal load behavior may result in significant changes in the biological and mechanical properties of dental implants and surrounding bone tissue. Most previous studies consider a single implant thread design, an isotropic bone structure, and a static occlusal load. However, the effects of different thread designs, bone material properties, and loading conditions are important concerns in clinical practice. Accordingly, the present study performs Finite Element Analysis (FEA) simulations to investigate the static, quasi-static and dynamic response of the implant and implanted bone material under various thread designs and occlusal loading directions (buccal-lingual, mesiodistal and apical). The simulations focus specifically on the von Mises stress, displacement, shear stress, compressive stress, and tensile stress within the implant and the surrounding bone. The results show that the thread design and occlusal loading rate have a significant effect on the stress distribution and deformation of the implant and bone structure during clinical applications. Overall, the results provide a useful insight into the design of enhanced dental implants for an improved load transfer efficiency and success rate.

Formation of colloidal threads in geometrically varying flow-focusing channels

When two miscible fluids are brought into contact with each other, the concentration gradients induce stresses. These are referred to as Korteweg stresses and are analogous to interfacial tension between two immiscible fluids, thereby acting as an effective interfacial tension (EIT) in inhomogeneous miscible systems. EIT governs the formation of a viscous thread in flow-focusing of two miscible fluids. To further investigate its significance, we have studied thread formation of a colloidal dispersion focused by its own solvent. Experiments are combined with three-dimensional numerical models to systematically expand previous knowledge utilising different flow-focusing channel setups. In the reference setup, the sheath flows impinge the core flow orthogonally while in four other channel setups, the sheath flows impinge the core flow at an oblique angle that is both positive and negative with respect to the reference sheath direction. As an initial estimate of the EIT, we fit the experimentally determined thread shape in the reference setup to a master curve that depends on EIT through an effective capillary number. By numerically reproducing these experimental results, it is concluded that the estimated EIT is within 25% of the optimal EIT value that can be deduced by iteratively fitting the numerical results to the experimental measurements. Regardless of channel setups, further numerical calculations performed using the optimal EIT evaluated from the reference setup show good agreement with the experimental findings in terms of thread shapes, wetted region morphologies, and velocity flow fields. The one-to-one comparison of numerical and experimental findings unveil the crucial role of EIT on the thread detachment from the top and bottom walls of the channel, bringing useful insights to understand the physical phenomenons involved in miscible systems with a high-viscosity contrast.

Numerical simulation of the thermal-hydraulic characteristics of supercritical carbon dioxide in a wire-wrapped rod bundle

A wire-wrapped spacer was considered in the fuel-assembly design of a supercritical carbon dioxide (SCO2) reactor to improve the heat transfer between the coolant and fuel elements. However, there is still a lack of understanding and detailed evaluation of the performance of the wrapped wire. In this study, the turbulent flow and heat transfer of SCO2 in a rod bundle were numerically investigated considering the fluid–solid conjugate interaction. Emphasis was placed on revealing the effects of wire shape, wire pitch and number of wire thread on the heat transfer and pressure drop. The performance evaluation criterion (PEC) was adopted to evaluate the performance of spacers. It was found that the heat transfer in the wire-wrapped rod bundle was enhanced compared to that in the bare rod bundle. The trapezoid-shaped wire shows a larger PEC than the circular- and rectangular-shaped wires. In addition, the PEC increased with the wire pitch first but declined subsequently, showing a peak with a wire pitch between 180 and 240 mm. The wire-wrapped spacer with two threads was recommended because of its high heat transfer efficiency and relatively low flow pressure drop.

Spur gear design, manufacturing and noise analysis according to rolling method using complex numbers

In this study, a software has been improved for parametric drawing and modeling of spur gear using complex numbers in the CAD setting. AutoLISP programming language was used in software development. In the system, parameters such as module and number of teeth can be entered by the user and drawing or modeling of the gears in the CAD environment can be done automatically. This study provides the designer with fast and functional and more precise utility alternative for gear drawing and modeling. In addition, within the scope of the study, the same number of teeth and at the module spur gear were designed in the AutoCAD package program with the classical method. Spur gears, designed in AutoCAD program with the developed package program and classical method, were produced on the wire EDM machine by deriving cutting codes in the MasterCAM program. Noise analysis of the produced spur gear pairs has been made. It was determined that the spur gear pair, designed and produced with the package program developed within the scope of the study, operates approximately 8 dB less noise than the spur gear designed and produced with the classical method. It is possible to design and manufacture the gear in the desired profile by changing the cutter profile for non-standard thread shapes to provide the performance required for a tool and standard tool parameters. For further investigations, spur gears produced by round-ended cutters can be applied symmetrically and asymmetrically.

Biomechanical behavior of the dental implant macrodesign in mandibular implant-supported overdentures

Aim The present in vitro study aimed to evaluate the effect of different dental implant macrodesigns on the stress occurred on the implants and bone for two-implant-supported overdentures (IOD) in the rehabilitation of edentulous mandibles. Methods Six different implant brands and macro design were used in this study. Two groups, Group V (V-thread shape) and Group R (reverse buttress thread shape), were formed based on implant thread shape. Vertical and oblique loads were applied to the implants in order to evaluate tension, compression, and Von Mises stresses by implementing the three-dimensional finite element analysis. Results According to the stresses after the applied forces, the macrodesign of dental implants affects stress distribution in different directions. Group R exerted more stresses on the cortical bone, while Group V produced more stresses on the implants. Tissue level implants caused high stresses on bones and low stress on itself. As proposed, microthread neck design decreased the stresses on the cortical bone. Conclusion In the light of these biomechanical findings, considering the anterior region of the mandible often consists of dense cortical bone, it may be advantageous to prefer implants with a V-thread design and a microthread neck surface, which creates less stress in the cortical bone.

Fixation effects of different types of cannulated screws on vertical femoral neck fracture: A finite element analysis and experimental study

Femoral neck fractures (FNFs) in young patients usually result from high-energy violence, and the vertical transcervical type is typically challenging for its instability. FNFs are commonly treated with three cannulated screws (CS), but the role of screws type on fixation effects (FE) is unclear. The purpose of this study was to evaluate the FE of ten types of CS with different diameters, lengths, depths, and pitches of thread via finite element analysis which was validated by a biomechanical test. Ten vertical FNF models were grouped, fixed by ten types of CS, respectively, all in a parallel, inverted triangular configuration. Their FE were scored comprehensively from six aspects via an entropy evaluation method, as higher scores showed better results. For partial-thread screws, thread length and thread shape factor (TSF) are determinative factors on stability of FNF only if thread depth is not too thick, and they have less cut-out risk, better compression effects and better detached resistance of fracture than full-thread screws, whereas full-thread screws appear to have better shear and shortening resistance. A combination of two superior partial-thread screws and one inferior full-thread screw for vertical FNF may get optimal biomechanical outcomes. The type of cannulated screw is important to consider when treating vertical FNF.

Analysis of Micro-Machining Process for External Thread of Micro Round Tube.

This study aims to analyze the stainless steel micro round tube external threading process for the influence of different outer threading pitches (0.25 mm, 0.4 mm) and outer diameters (Ø1.9, Ø1.94, Ø2). This study also analyzes the effects of different friction factors (0.1, 0.3, 0.5, 0.7, and 0.9) and different tube thicknesses (0.4, 0.45, 0.5, 0.55, and 0.6 mm) on the threading process. This study considers size effect to use corrected material parameters for the microtube to conduct the finite element analysis by DEFORM-3D software. The goal is to understand stainless steel (SUS304) micro round tube threading and the difference by using macro material parameter analysis. The historic forming data from the simulation and experiment of threading processing are presented, and the corresponding stress/strain distribution and thread shape are also calculated. The experiment results are compared to the simulation results to verify the reliability of this analysis method. The result shows that the torque/stress/strain obtained by the modified model is always lower than by Swift’s model. It means that the size effect can be considered to apply on the forming process and provided proper torque to form the external thread of the micro round tube, e.g., the maximum torque of the round die for M2 × 0.25 occurs over the fourth stroke. For the influence of the outer diameter of the micro round tube, the larger diameter induces the larger maximum torque on the round die for M2 × 0.4, but for the smaller pitch of M2 × 0.25, the larger maximum torque is not influenced by the diameter of the tube. When the pitch of the round die is increased, the torque, stress and strain are also increased relatively. As the friction factor and torque between the round die and tube increase, the stress and strain become lower. Changing the tube thickness will not significantly change the torque, the stress, and the strain. These results guide the simulation and experiment of optimized micro round tube threading development and design to reduce cost and increase product quality.

Dental mini-implant designs to support overdentures: Development, biomechanical evaluation, and 3D digital image correlation

Statement of problemCustom mini-implants are needed for edentulous patients with extensive mandibular deficiencies where endosteal placement is not possible. However, the best design for these mini-implants is unclear. PurposeThe purpose of this in vitro study was to develop 2 dental mini-implant designs to support mandibular overdentures and evaluate the effect of their geometries on primary stability and stress distribution. Material and methodsTwo mini-implant designs were developed with changes in the shape, size, and arrangement of threads and chamfers. The experimental mini-implants were made of Grade V titanium alloy (Ti-6Al-4V), (Ø2.0×10 mm) and submitted to a nanoscale surface treatment. Thirty mini-implants (n=10) were placed into fresh swine bones: experimental-threaded, experimental-helical, and a commercially available product model (Intra-Lock System) as the control. The biomechanical evaluations of the experimental mini-implants were compared with those of the control in terms of primary stability, through insertion torque (IT), and with the pullout test. The analysis of stress distribution was performed by using the method of 3D digital image correlation under 250-N axial load and 100-N oblique (30-degree angled model) load. The data were analyzed by ANOVA and the Tukey HSD test (α=.05). ResultsThe IT and pullout test presented a statistically significant difference for all mini-implants (P<.05), with higher IT for the experimental-threaded and maximum pullout force for the control, followed by threaded (P=.001) and helical (P=.001). Regarding the 3D digital image correlation, a lower incidence of stress was found in the cervical third for all mini-implants. No statistically significant differences were found between the designs evaluated (P>.05). ConclusionsComparing the experimental mini-implants with the commercially available control, the experimental-threaded model presented greater primary stability, and all mini-implants showed less stress in the cervical third.

Synthesis and Diagnosis New Metallotropic LCs from Organotin (IV) Complex

Organotin (IV) complex is part of the organometallic chemistry and in recently decades have a variety of interesting and application used it. A new class of metallomesogens LC (A) Ph3Sn(VAL), (B) Bu3Sn(VAL), (C) Ph2Sn(VAL)2 and (D) Bu2Sn(VAL)2 was synthesis through the reaction of valsartan ligand with (di- or tri- butyl tin chloride salt) and (di- or tri- phenyl tin chloride salt) in methanol solvent. 1H NMR,119 Sn NMR, FTIR and CHN elemental analyses were measure and the liquid crystalline properties were study by POM. The mesophase in all organotin (IV) carboxylate complexes are thermotropic nematic phase. In complexes (A, C) the optical textures of A show a typical droplet texture and thread shape LC phase transition between (400-440⁰C) higher than mesophase textures in C between (230 -250⁰C). In complexes (B, D) the optical textures of B appearance a thread shape and the LC phase transition temperature between (200 -400⁰C) and in D thread shape and the transition temperature beginning up to 280⁰C. From a temperature of phase transition show that the complexes (C, D) are start liquid crystal mesophase in lower than complex (A, C) because effect of R-group and types which due to an asymmetric arrangement of the molecule and a geometry was calamitic in which the length of the molecule is major in compare with its diameter.

Synthesis and investigation of the structural properties of vanadium pentaoxide nano thread at low temperature

Vanadium Oxides nanomaterial has shown a great potential in numerous application due to its high light absorption phenomena in the visible range. Among all the possible phases of vanadium oxides, herein we report a simple and facile hydrothermal route for the synthesis of vanadium pentaoxide (V2O5) synthesis at low temperatures. Thread like nanostructures of V2O5 were developed by calcination of vanadyl glycolate (VO(CH2O)2) which was synthesized by hydrothermal route using ammonium vanadate as precursor in the presence of hydrochloric acid (HCL) at low temperature 180 °C. Our develop process of synthesis is free from any templates and reduction agents. Further, the morphology, chemical and structural properties was characterized using Field Emission-Scanning Electron Microscopy, X-ray diffraction, Raman profile and FTIR spectroscopy. The FESEM studies confirms the formation of vanadium pentaoxide in thread shape with thickness in the range of 80 ± 20 nm and length in 4–5 µm. Also, X-Ray diffraction and Raman profile reveals the formation of the orthohombic phase of V2O5.The above synthesized nanostructure materials can be further used in enhancing li-ion batteries efficiency and various thermal and optoelectronic applications.

Analysis of micromovements and peri-implant stresses and strains around ultra-short implants - A three-dimensional finite-element method study.

Background:Success of an implant depends on its placement in the bone and how well the stress and strain are distributed to the surrounding structures when occlusal force is applied to it. The size and shape of the implant plays an important role is the formation and distribution of stress and strains in the periodontium. Von Mises stresses and micromovements need to be evaluated while placing implants in D4 bone quality regions for a higher success rate.Aim:To evaluate the peri-implant Von Mises stresses, strains, and micromovements distribution in D4 bone quality around ultra-short implants of 5 mm length with varying diameters of 4 mm, 5 mm, and 6 mm.Materials and Methods:The finite element method was employed to make models replacing maxillary molars in D4 type bone that was missing. Implants that could be classified as ultrashort (5 mm) were used. These implants were of varying diameters of 4, 5, and 6 mm. In each model, the implant was subjected to a force of 100 N and analyzed. The force was applied in an oblique (45 degrees) and vertical direction (90°) to the long axis of the tooth. The models were made such that they simulated cortical and cancellous anisotropic properties of the bone. The models were then analyzed using the program ANSYS workbench version 12.1.Results:When all the three diameters were compared wide diameter, i.e., 6 mm threads had the least values of peri-implant von Mises stresses, strains, and micro-movements around them. When thread shapes were taken into consideration square micro thread created the most favorable stress parameters around them with minimum values of stress, strains, and micromovements.Conclusion:Ultrashort implants combined with a wide diameter and platform switched can be used in atrophic ridges or when there is a need for extensive surgery to prepare the implant site.

Effect of rolling parameters on forming quality of flat cross wedge rolling thread shafts

The flat cross wedge rolling is an advanced forming process, which is used to produce thread shafts. In this work, a finite element model of flat cross wedge rolling thread shafts was established by the DEFORM-3D, and the effect of the forming angle, spreading angle, helix angle and flank angle on forming quality are investigated. The research results show that the forming angle, spreading angle, helix angle have a significant influence on the position of the die wedge-in point. The angle designed wrongly makes the die wedge-in point unable to be aligned correctly, causing defects such as slipping in the process, repeated rolling of formed thread, thin or incomplete tooth shapes. The flank angle mainly makes an impact on the axial force. Reducing the right flank angle or increasing the left flank angle can effectively improve the imbalance of axial force to obtain high-quality thread shafts. Through the experiment of flat cross wedge rolling thread shafts, the data comparison demonstrates that the error of the external dimension of formed parts is small, proving the reliability of the rolling parameter selection.

Thread shape affects the stress distribution of torque force on miniscrews: a finite element analysis

This study aimed to investigate the effect of miniscrews thread shape on the stress distribution receiving a torque load. Seven thread shapes (S,V1,V2,B1,B2,R1,R2) models were constructed and a 6 Nmm-torque load was applied. The order of maximum equivalent stress (EQV) value was V1 > V2 > B1 > R1 > R2 > B2 > S. The order of maximum displacement of miniscrew (Max DM) value was S > B2 > R1 = V1 > B1 > V2 > R2. Model R2 may be the most appropriate thread shape affording a torque force.

EVALUATION OF DENTAL IMPLANTS USING A MODIFIED THREAD GEOMETRY IN THE MANDIBULAR PREMOLAR REGION

Introduction: Modern implantology is changing direction towards the development of new implant macrodesigns that are able to provide a high level of physico-mechanical characteristics. This study examines the mechanical aspect of implants. In particular, macrodesign such as thread shape, pitch and depth. Objectives: To evaluate clinically and radiographically fin thread design implant osseointegration and primary stability in mandibular premolar region. Materials and methods: A clinical study was conducted on thirteen patients with missing mandibular premolar teeth. The magic fc implants with fin thread were inserted. After 3 months, final crowns were delivered. All implants were followed for 6 months. Clinically, each patient was evaluated for pain, swelling and stability of the implant. Radiographically, cone beam computed tomography (CBCT) was used for the assessment of marginal bone level and bone density. Results:There was a significant increase in bone density from immediate postoperative to the end of the 6 months. The mean of marginal bone level from immediately post-operative to the 3rd month was significant and from immediate to 6th month was significant. One case displayed swelling in the first week and the implant was removed (failure case) due to lack of oral hygiene maintenance by the patient. Conclusions: Magic FC implants with fin thread were a successful treatment procedure, with satisfactory clinical outcomes, and a low incidence of complications.