Print ISSN: 1812-1217

Online ISSN: 1998-0345

Author : Al-Jwary, Enas T


Relationship of Lateral Dentoskeletal Morphology to Dental Crowding in Patients With Class II Malocclusions

Enas T Al-Jwary; Hind T Jarjees; Omar H. Alluazy

Al-Rafidain Dental Journal, Volume 17, Issue 1, Pages 12-22
DOI: 10.33899/rden.2016.164135

Aims:  The aims of  this study was to evaluate the relationship of lateral dentoskeletal morphology to the amount of dental crowding in patients with Class II malocclusion. Materials and Methods: Study models and lateral cephalometric radiographs of a Class II malocclusion of 62 Iraqi patients(18-25 years) lived in the center of Mosul City (30males and 32 females), were evaluated.  The sample was divided into two groups according to severity of pretreatment mandibular crowding. Group 1 consisted of 30 patients and have  crowding ≥ 3 mm. Group 2 have  32 patients and crowding Results: Significant differences between  crowding less than 3mm  and crowding groups more than 3mm were seen in posterior facial height ( S-Go) , the angle between sella, nasion and occlusal plane line ( S-N-Ocp) and the angle between sella, nasion and the long axis of lower central incisor (S-N-L1) in males,  while in females, the significant differences were seen in the angle between sella, nasion and the long axis of lower central incisor (S-N-L1) and the angle between Sella–nasion line and mandibular plane(NS- GoMe). The other parameters showed no significant differences. The correlation coefficients of the amount of crowding with all the measurements were studied. Some of them showed a positive  correlation, while others showed a negative one. Conclusions: Subjects with Class II malocclusion and different amount of dental  crowding have no significantly relation with skeletal parameters. Results suggest that dental crowding is independent of the skeletal measurements.

Surgical Exposure and Orthodontic Treatment of Impacted Maxillary Central Incisors. A Case Report

Khudair A Al-Jumaili; Enas T Al-Jwary; Hind T Jarjees

Al-Rafidain Dental Journal, Volume 13, Issue 2, Pages 259-265
DOI: 10.33899/rden.2013.84804

Aims: This report describes a case of eleven years old female with impacted maxillary central incisors and presence of two supernumerary teeth .The surgical exposure and orthodontic traction of bilaterally impacted central incisors after removal of impacted supernumerary teeth is presented in this report. Materials and Methods: Clinical, radiographic follow-up and treatment was conducted at the department of orthodontic and maxillofacial surgery in the college of dentistry ,mosul university .The surgical removal of supernumerary teeth done then surgical exposure and orthodontic traction done. Results: The impacted maxillary central in-cisors were successfully positioned and presented an acceptable gingival contour after treat-ment. Conclusion: Maxillary permanent central incisors were successfully positioned in the maxillary arch by surgical exposure and orthodontic traction, which showed good stability.

Effect of Artificial Salvia on Force Values of Two Types of Nickel Titanium Ortho-dontic Arch Wires

Afrah K Al -Hamadani; Enas T Al-Jwary

Al-Rafidain Dental Journal, Volume 12, Issue 2, Pages 301-308
DOI: 10.33899/rden.2012.65064

Aims: To study the effect of artificial saliva and time interval on the amount of force values of nitinol and superelastic NiTi wires. Materials and Methods: Two types of orthodontic wires chosen for the study nitinol and superelastic NiTi wires of a guage of 0.016 inch in diameter (Dentaurum, Germany). Specimens of the wires were divided in to two groups ;the control group(dry condition) contained the wires as - received condition and experimental groups for the study of the force value of wires which subjected to artificial saliva for three time incubation periods (3 days, 7 days, 28 days) . At end of each incubation periods ,the wire specimens were tested for the effect of artificial saliva on force values of the wire. The measurement of force values of arch wires done with a universal tensile testing ma-chine ,the force values of specimens were evaluated with the help of three point bending test. The re-sults were subjected to the descriptive statistics and to the ANOVA and Duncan’s Multiple Range Analysis Tests to detect the amount of changes among these groups . Result: The findings of the present study showed that the control group of nitinol wires had the highest rate of force value with significant difference (P≤ 0.05) with experimental groups, while the experimental group after 28 days gave rise to the lowest one with significant difference (P≤ 0.05) from other groups. For the superelastic nickel titanium the result showed that the control group had the highest rate of force value while the experimental group after 28 days gave rise to the lowest one with significant difference (P≤ 0.05) from control and non significant difference (P> 0.05) with the experimental groups after 3 days and 7 days. Conclusion: The nitinol wires showed a continuous change in force values with increase time in ar-tificial saliva, so this required reactivating or changing the wire at a certain interval of use. While force values of the superelastic nickel titanium wires decreased after 3 days interval and remained constant after that .

Factors Affecting on Permanent Deformation of Orthodontic Arch wires (An In vitro Study)

Enas TM Al-Jwary

Al-Rafidain Dental Journal, Volume 11, Issue 2, Pages 317-322
DOI: 10.33899/rden.2011.9077

Aims: To measure the amount of permanent deformation of different types of orthodontic arch wires and to study the effect of both time interval and simulated oral environment on amount of permanent deformation of different types of nickel titanium and stainless steel orthodontic arch wires. Materials and Methods: The sample consisted of five types of orthodontic arch wires (extra spring hard stainless steel , spring hard stainless steel, multi strand stainless steel ,nitinol nickel titanium and super elastic nickel titanium), 0.016 inch of round section were deflected into orthodontic brackets fitted in acrylic models put in a closely packed glass container and 200 ml artificial saliva added to them and the sam-ples stored in incubator at 37 °C . At the end of incubation period, the acrylic block take and the wire deactivated and the amount of permanent deformation measured by using Stereo microscope. The results were subjected to the descriptive statistics and to the ANOVA and Duncan’s Multiple Range Analysis Tests to detect the changes among these groups. Results The findings of the present study showed that spring hard stainless steel wires at 28 days gave rise to the highest mean values of perma-nent deformation, while the super elastic wires at 1hr gave rise to the lowest one. The remaining groups distributed on statistical levels of significant difference (P ≤ 0.05) between the upper and lower levels. Conclusions: The super elastic nickel titanium wires exhibited better spring back characteristics and less permanent deformation than the stainless steel. Several wires increased deformation as deflection time increased in simulated oral environment.