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Access Statistics 2015 | January-April | Issue 1

 

Original Article
Hasan Sarfaraz, Kamalakanth Shenoy, Akhter Hussain, P Sucheta

A Comparison of Four Implant Abutment Connection Designs on the Stress Distribution Pattern using 3D Finite Element Analysis

[Year:2015] [Month:January-April] [Volumn:6 ] [Number:1] [Pages:34] [Pages No:1-8]


ABSTRACT

The aim of this study was to evaluate the influence of four different implant abutment connection designs on the amount of stress dissipated on the implant, abutment screw, implant abutment interface and the bone when subjected to various loading conditions.
Computer aided design models of four different implant abutment connections, were constructed using Pro-Engineer 05. The 3D models were meshed using Hymermesh 11. Static load vertical loads 100 N were applied along the long axis of the implant at the central fossa and on the tip of buccal cusp. An oblique load was applied on the tip of the buccal cusp. This mesh was imported into ANSYS 13 to perform the numerical simulation.
The result showed that vertical loads closer to the implant long axis produced much lower Von Mises stresses than when loads applied away to the long axis of implant. The two types of conical connections dissipated the least amount of stress to the surrounding bone and most of the stresses were recorded at the implant abutment interface of these connections. The parallel hex connection showed a great amount of stress being dissipated to the abutment screw on vertical loading and most of these stresses were located at the 1st thread of the implant.

Conclusion: All the four implant abutment designs studied showed the least amount of stress on the various areas of the assembly and the surrounding bone, when the loads applied were close to the long axis of the implant. Both the conical connections proved to be the most favorable connections, and the parallel hex connection was the least favorable design. The tri-channel cylindrical connection design was stable on loads applied along and closer to the implant axis, but produced high amount of stress on the bone on oblique loads applied at a distance from the long axis of the implant.

Keywords: Conical connection, Implant abutment interface, Implant abutment screw, Internal hex connection, Stress distribution, Tri-channel connection.

How to cite this article: Sarfaraz H, Shenoy K, Hussain A, Sucheta P. A Comparison of Four Implant Abutment Connection Designs on the Stress Distribution Pattern using 3D Finite Element Analysis. Int J Oral Implantol Clin Res 2015;6(1):1-8.

Source of support: Nil

Conflict of interest: None

1017

Review Article
Manesh Lahori, Rathika Rai, Rahul Nagrath, Manpreet Kaur

An Insight into Different Innovative Techniques to Retrieve Cement-retained Implant Supported Prosthesis

[Year:2015] [Month:January-April] [Volumn:6 ] [Number:1] [Pages:34] [Pages No:9-16]


ABSTRACT

Cement-retained restorations are the most commonly used restorations, though they can compensate for minor discrepancies in the fit of the prosthesis using cement and cement space but the major drawback is retrievability of such prosthesis. The increasing practice of permanently cementing the implant supported prosthesis is more likely to have biologic and technical failures.
This article describes various methods that simplify the retrievability of cement retained prosthesis. As the retrievability of the implant supported prosthesis is a basic consideration while delivering quality patient based treatment outcomes.

Keywords: Abutment screw, Cement-retained prosthesis, Cross pins, Guide holes, Lateral access holes, Precision implant locating device, Retievability, Screw access holes, Screw-retained prosthesis.

How to cite this article: Lahori M, Rai R, Nagrath R, Kaur M. An Insight into Different Innovative Techniques to Retrieve Cement retained Implant Supported Prosthesis. Int J Oral Implantol Clin Res 2015;6(1):9-16.

Source of support: Nil

Conflict of interest: None

668

Case Report
Rocco E Mele, Anthony Caiafa, Gregori M Kurtzman, Lanka Mahesh

Endosseous Implant/Crown Survival in a Companion Animal: A Case Study

[Year:2015] [Month:January-April] [Volumn:6 ] [Number:1] [Pages:34] [Pages No:26-34]


ABSTRACT

It has long been accepted, although with some limitations, that the discipline of veterinary dentistry has tended to follow the trends and advancements in the human dental field. This is the case for the area of dental implantology. As for any procedure performed on a patient, the patient (in human dentistry) or the pet owner (in veterinary dentistry) need to be able to make an informed decision based on the available evidence, given to them by their clinician. The concept of informed consent is paramount in the relationship between clinician and patient/ pet owner. This case report describes the replacement of four mandibular incisor teeth with two cantilevered implant bridges in a dog. Treatment included selective extractions with bone grafting and dental implants to replace the 4 mandibular incisors.

Keywords: Canine, Case report, Dental implants, Veterinary dentistry.

How to cite this article: Mele RE, Caiafa A, Kurtzman GM, Mahesh L. Endosseous Implant/Crown Survival in a Companion Animal: A Case Study. Int J Oral Implantol Clin Res 2015;6(1): 26-34.

Source of support: Nil

Conflict of interest: None

454

Review Article
Suchita Madhukar Tarvade (Daokar), Sadashiv Gopinath Daokar

Implants in Orthodontics

[Year:2015] [Month:January-April] [Volumn:6 ] [Number:1] [Pages:34] [Pages No:17-19]


ABSTRACT

In the orthodontic process, gentle, constant pressure is applied to the teeth that need to be moved against the other teeth which serve as the anchoring unit. The anchoring teeth must be completely stable. Since ages orthodontist have fought for absolute anchorage. Introduction of implants to orthodontic field have made this a possibility. Orthodontic implants also known as mini-implants have widened the horizon of orthodontic field. Available in various forms, sizes, surface texture and material, they have become an essential armamentarium of an orthodontist. This article will deal with various aspects of orthodontic implants-their indications, contraindications, placement sites and complications.

Keywords: Absolute anchorage, Implants, Orthodontics.

How to cite this article: Daokar SMT, Daokar SG. Implants in Orthodontics. Int J Oral Implantol Clin Res 2015;6(1):17-19.

Source of support: Nil

Conflict of interest: None

449

Case Report
Gregori M Kurtzman, Lanka Mahesh

Implant Uncovery and Soft-tissue Modification Utilizing a Diode Laser

[Year:2015] [Month:January-April] [Volumn:6 ] [Number:1] [Pages:34] [Pages No:20-25]


ABSTRACT

Diode lasers have become more widely used in dental clinical practice and have demonstrated a safe effective method for treatment in and around implants that require soft-tissue modification to either expose the implant for the restorative phase or reshape the gingival margins for esthetics. The article will discuss the methods that have been employed for soft-tissue modification around implants traditionally and compare these to use of the diode laser.

Keywords: Diode laser, Implant, Second stage surgery, Uncovery.

How to cite this article: Kurtzman GM, Mahesh L. Implant Uncovery and Soft-tissue Modification Utilizing a Diode Laser. Int J Oral Implantol Clin Res 2015;6(1):20-25.

Source of support: Nil

Conflict of interest: None

360

Editorial
Gregori M Kurtzman

Oral Biofilms: The Systemic Connection—An Evolution in Dental Care

[Year:2015] [Month:January-April] [Volumn:6 ] [Number:1] [Pages:34] [Pages No:V]


ABSTRACT

Oral Biofilms: The Systemic Connection-An Evolution in Dental Care

A direct link has been well established between oral health and systemic disease. Poor oral hygiene habits exacerbate the situation. As periodontal conditions worsen the local situation within the pockets around natural teeth and implants have an increasing effect distant from the oral cavity.

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