ORIGINAL_ARTICLE
Effect of different tooth surface conditioning techniques on shear bond strength of orthodontic brackets
Background: The aim of this study was to test, in v Background: ivo, the effect of using warm air for drying the tooth surface after conditioning, on the shear bond strength of orthodontic brackets. This shear bond strength was also compared to the shear bond strength of brackets after different tooth surface conditioning techniques with compressed air from 3-way syringe for drying etched enamel. Methods: eighty sound premolar teeth were Methods: divided into four groups (20 into each group). According to the methods used, brackets (mini 2000) were bonded after enamel preparation with acid etch (control), pumice prophylaxis+acid etch, pumice+sandblasting 50 microns+acid etch, pumice+sandblasting+acid etch+warm air. The teeth were mounted in metallic mold using a mounting jig to align their labial surfaces with the bonded brackets to be parallel to the applied force during the shear bond strength testing. Also after debonding, the amount of resin remaining on each tooth was evaluated. Results: there was a statistically significant diff Results: erence among the four groups increased with the following sequence; group B showed the significantly lowest shear bond strength values, then the control group, followed by group C and finally group D showed the significantly highest values. Adhesive remnant index (ARI) evaluation indicated higher frequency in group A, C and D, if compared to group B. Conclusion: complete enamel preparation Conclusion: with pumice prophylaxis, followed by sandblasting, acid etch and warm air drying significantly improved shear bond strength.
https://eos.journals.ekb.eg/article_77110_b9247c3cba50d3ed8e84f7d22a87816e.pdf
2017-06-01
1
14
10.21608/eos.2017.77110
Acid etch
Pumice
Sandblasting
warm air
Shear bond strength
adhesive remnant index
Ahmed
El Kalza
1
Department of Orthodontics, Faculty of Dentistry, Alexandria University
AUTHOR
Dawlat
Mostafa
2
Department of biomaterials, Faculty of Dentistry, Alexandria University
AUTHOR
ORIGINAL_ARTICLE
Subjective appraisal of patients' opinions of factors affecting their choice for an orthodontic practice
Objectives: The choice of an orthodontist and an or Objectives: thodontic office sometimes is time consuming for patients and/or their parents. Some patients might do “shopping” for both before deciding on an appropriate one. This study was designed to identify factors affecting the choice of patients or their guardians when choosing a practice. Methods: Methods: Methods: All participants to take the questionnaire were 18 years and above and if under 18 their guardians were asked to fill in the questionnaire. The questions where presented both in English with a translation to “Arabic”, the national language. The questionnaire consisted of 37 items covering various domains about the practitioner and his/her practice. The orthodontic offices were first contacted and those who accepted to participate in the study were paid a visit. For standardization, one of the authors was in charge of explaining the questionnaire to both the orthodontist and the staff. Responses were given on a visual analog scale (VAS) Results: Results: Results: Respondents (n=237) answered the questionnaire and females (66.1%) were predominant over males (33.9%). The Top scores were on items discussing the clinic in terms of “cleanness” followed equally by both “a clinic that operates on time” and “a clinic that uses the latest orthodontic technology and equipments”. Conclusions: Conclusions: The lusions: orthodontic practice tidiness and being up-to-date and punctualityseems to be the most important factor in patient’s selection. Both novice and currently practicing orthodontists should be aware about the most important factors that patients or their guardians consider when they are making their minds and choosing an orthodontic practice.
https://eos.journals.ekb.eg/article_77111_4d6f979b37e466e72c162d46e24aa9a0.pdf
2017-06-01
15
28
10.21608/eos.2017.77111
Orthodontic office
patient appraisal
Questionnaire
Sherif
Zahra
1
Department of Orthodontics, Faculty of Dentistry, Suez Canal University
AUTHOR
Tamer
Bedair
2
Department of Orthodontics, Faculty of Dentistry, Suez Canal University
AUTHOR
ORIGINAL_ARTICLE
Evaluation and management of pain related to orthodontic treatment
The aim of the study was to evaluate the onset and intensity of pain induced after the insertion of fixed orthodontic appliances. Also, to compare analgesics versus non-analgesics pain management approach (protocols). Material and metho Material and methods: Material and methods: One ds: hundred and fifty patients, ranged from 13 to 22years of age were asked to answer a questionnaire previously prepared to fulfill the aim of this work. They were divided into three groups, 50 patients each: the first group was the control group. They used acetaminophen 500 mg orally when pain was felt (VAS ≥ 4). The second group was asked to use acetaminophen 500 mg orally 30 minutes before the procedure and the third group was asked to use bite wafer. Results: Results of this study revealed that there Results: was a significant difference in pain intensity between group I and the other two groups in the first 24hrs. Pain intensity was high in group I compared to groups II and III. While, comparison between group II and group III revealed non-significant difference (p>0.05). Time to first analgesia was significantly shorter in group I compared to either group II or III. While, comparison between groups II and III revealed non-significant difference. Analgesic consumption in group I was significantly bigger than the other two groups, with non-significant difference between these two groups. Conclusion: Either preoperative analgesia or bite w Conclusion: afer can effectively relief post-operative pain during orthodontic treatment.
https://eos.journals.ekb.eg/article_77112_b9f6f941a0529f6c8dd55ef8b091d46b.pdf
2017-06-01
29
40
10.21608/eos.2017.77112
Pain
orthodontic treatment
acetaminophen
bite wafer
Nahla
Gomaa
1
Department of Orthodontics, Faculty of Dentistry, Tanta University
AUTHOR
Mohamed
Ellaithy
2
Department of Orthodontics, Faculty of Dentistry, Tanta University
AUTHOR
ORIGINAL_ARTICLE
The effect of platelet rich plasma injection on relapse of orthodontically moved teeth in rabbits
Objective: To test the hypothesis that platelet rich plasma (PRP) injection can minimize relapse of orthodontically movedteeth. Material and Methods: Thirty rabbits were randomly and equally divided into three groups (A, B and C). The mock group C (n=10) was further equally divided into C1 and C2 subgroups. A mesializing force was applied to the first molar on both sides in all groups. After achieving orthodontic movement, in groups A and B, (PRP) was injected on the experimental side while normal saline was injected on the control side. Animals in group C did not receive any injections. Animals in groups A and C1 were sacrificed after 1 week and animals in groups B and C2 were sacrificed after four weeks. Amount of first molar relapse in all groups was measured and compared. Results: After 1 week and 4 weeks relapse periods; the distance of relapse in the experimental group was reduced significantly (P <0.001) when compared with the control and mock groups. No statistically significant difference was found between the relapse observed in the experimental groups in 1 week and 4 weeks relapse periods; (29.09%) and (39.16%) respectively. However, relapse increased significantly (P <0.001) in both the control and mock groups from 1 week to 4 weeks relapse period intervals. Conclusion: The injection of platelet rich plasma can significantly reduce the amount of orthodontic relapse following removal of the orthodontic force.
https://eos.journals.ekb.eg/article_78359_5f3cba7de92cde24e96664cf68d4f4bd.pdf
2017-06-01
41
57
10.21608/eos.2017.78359
relapse
Rabbits
platelet rich plasma
Sherief
Abdel-Haffiez
1
Department of Orthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
LEAD_AUTHOR
Hanan
Ismail
hananaminismail@gmail.com
2
Department of Orthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
AUTHOR
Nadia
Elharouni
3
Department of Orthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
AUTHOR
Hanaa
Ali
4
Department of Orthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
AUTHOR
ORIGINAL_ARTICLE
Evaluation of piezocision in rapid canine retraction
Objective: The aim of this study is to evaluate the effectiveness of piezocision technique during rapid canineretraction. Materials and Methods : Material of the study consisted of ten patients of both genders, with age ranging from 16 to 25 years with malocclusion that require extraction of first premolars followed by canine retraction. Before starting canine retraction, maximum anchorage was ensured by placing mini-screws 10 mm in length and 1.6 mm in diameter between the second premolar and the first molar. In the experimental group, two vertical incisions were made on the buccal aspect mesial and distal to the canine. Piezo electric knife was used to create cortical bone incisions to a depth of 3 mm. Canine retraction was performed on both sides using nicklel-titanium closed coil springs with force of 150 gm. Scanned casts were used to evaluate canine retraction movement on both sides. Results: On comparing the two sides at the same time, it was found that there was a significant difference between both sides. It was found that the test side was significantly decreased more than the control side. Conclusion: Piezocisionfacilitated orthodontics is an effective treatment alternative that decreases the time required for canine retraction.
https://eos.journals.ekb.eg/article_78360_331a97be21ed8cfcd5a42c63809eeff3.pdf
2017-06-01
59
71
10.21608/eos.2017.78360
Ahmed
Elkalza
1
Department of Orthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
LEAD_AUTHOR