World journal of orthodontics (World J Orthod )

Publisher: World Federation of Orthodontists


World Journal of Orthodontics is focused on the busy orthodontic clinician: to provide avant-garde, evidence-based, clinically relevant information in the most efficient and effective manner. WJO will provide an open and active international forum between readers and world-class authors. An electronic version of the journal will aid and abet this cause. Special sections of the WJO will provide the active clinician with abstracts of pertinent research, latest advances in diagnostic armamentaria, and coverage of international orthodontic news and meetings. Incorporated The International Journal of Adult Orthodontics & Orthognathic Surgery since it was discontinued in 2002.

  • Impact factor
  • 5-year impact
  • Cited half-life
  • Immediacy index
  • Eigenfactor
  • Article influence
  • Website
    World Journal of Orthodontics website
  • Other titles
    World journal of orthodontics (En ligne), WJO
  • ISSN
  • OCLC
  • Material type
    Document, Periodical, Internet resource
  • Document type
    Internet Resource, Computer File, Journal / Magazine / Newspaper

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: The Class III malocclusion with mandibular prognathism and open bite can be a result of excessive mandibular growth, underdevelopment of the maxilla, environmental factors, and trauma to the jaws. Correction of this malocclusion can involve an orthodontic or a combined orthodontic-orthognathic approach. Skeletal asymmetries can complicate this situation, making treatment more difficult. This skeletal Class III deformity with skeletal open bite case presentation involves treatment with a combined orthodontic-bimaxillary orthognathic approach following rhinoplasty. In addition, the patient's postoperative skeletal and dental stability was well-maintained after 1 year postoperation.
    World journal of orthodontics 02/2009; 10(1):57-66.
  • [Show abstract] [Hide abstract]
    ABSTRACT: In contemporary dental care, an increasing number of adult patients with periodontal disease are seeking orthodontic treatment. Achieving optimal results in such adult patients is difficult because decreased posterior tooth anchorage is risky. This case report demonstrates the use of miniscrew implant anchorage (MIA) in a Chinese male 21 years 5 months of age with maxillary and mandibular anterior dental spacing, bimaxillary protrusion, and severe bone loss caused by periodontal disease. Prior to orthodontic treatment, the patient underwent treatment to control his periodontitis. The patient was treated with 0.022-in straight-wire orthodontic appliances. After 17 months of active orthodontic treatment, the patient had healthier periodontal tissue with increased bone support, as well as improved facial esthetics and a functional occlusion. The results demonstrate that MIA is useful in enhancing anchorage in patients with bone loss associated with severe periodontal disease.
    World journal of orthodontics 02/2009; 10(1):49-56.
  • [Show abstract] [Hide abstract]
    ABSTRACT: To evaluate the shear bond strength in vivo and in vitro of metallic brackets bonded to human teeth with light-curing bonding material, using two types of light-curing units. Sixty human premolars were divided into six groups. In the GI and GII groups, the brackets were directly bonded to volunteers' maxillary and mandibular second premolars on the right and left sides, respectively, of their mouths. In the other groups, the brackets were bonded to extracted first premolars. The polymerization was performed in GI, GIII, and GV with an LED (light-emitting diode) device, while in GII, GIV, and GVI, a halogen light was used. In GI and GII, shear strength tests were conducted using a portable digital dynamometer placed directly in the patients' mouths. The teeth from GIII, GIV, GV, and GVI were stored in distilled water at 37 degrees C for 24 hours. Afterward, they were thermocycled between 5 degrees and 55 degrees C. Then, in GIII and GIV, a Universal Testing Machine was used; in GV and GVI, mechanical tests were performed with a digital dynamometer. The bracket/adhesive failure modes were evaluated with the Adhesive Remnant Index (ARI). The average values of the shear strengths in MPa were: GI = 3.65; GII = 4.39; GIII = 6.45; GIV = 7.11; GV = 4.67; and GVI = 4.21. The type of light-curing unit did not interfere with the results of the mechanical tests in vivo or in vitro. The tests performed with a portable digital device obtained average values that were significantly lower than those performed with the Universal Testing Machine.
    World journal of orthodontics 02/2009; 10(1):21-8.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Soft drink consumption has steadily increased in recent decades in both western and developing countries. The trend is most apparent among children and adolescents. This rise in soft drink consumption has raised concerns among health care professionals, including dental practitioners. Accordingly, the effects of soft drinks on dental health have been investigated. Several studies have shown that dental problems, such as caries, enamel erosion, and corrosion of dental materials, may be associated with soft drink consumption. Because orthodontic appliances restrict toothbrush access, patients undergoing orthodontic treatment need special oral care and advice. This article reviews the risks and implications of soft drink consumption for orthodontic patients.
    World journal of orthodontics 02/2009; 10(1):33-40.
  • World journal of orthodontics 02/2009; 10(1):78-81.
  • [Show abstract] [Hide abstract]
    ABSTRACT: To investigate the incidence and distribution of alveolar bony defects in the mandibular anterior area. A flap procedure was performed to expose the labial alveolar bone of the mandibular anterior area of 32 patients. The presence of alveolar defects including dehiscences and fenestrations were recorded. Seventy-eight percent (25) of the examined patients had at least one tooth with an alveolar bony defect. Dehiscences were found to be most commonly associated with the midline of the labial surface of mandibular left and right canines followed by the mesiolabial line of the same teeth. The structure and topography of alveolar bone should be considered prior to the treatment planning and tooth movement. Moreover, there is a tremendous need to develop a noninvasive precise method for diagnosing alveolar defects.
    World journal of orthodontics 02/2009; 10(1):16-20.
  • [Show abstract] [Hide abstract]
    ABSTRACT: To compare the degree of intra- and interarch dentoalveolar asymmetry among patients with a normal occlusion, Class II Division 1 malocclusion, and Class II subdivision malocclusion. The sample comprised dental casts of 150 (72 males [ages 22. 1 +/- 3.11 and 78 females [ages 21.1 +/- 2.1]) normal occlusion subjects, 106 (45 males [ages 17.8 +/- 1.8] and 61 females [ages 16.5 +/- 2.91) Class II Division 1 patients, and 40 (18 males [ages 15.8 +/- 2.8] and 22 females [ages 15.2 +/- 3.3]) Class II subdivision malocclusions. Maxillary and mandibular reference lines were constructed and used for the intraarch asymmetry measurements. Thirty-six width measurements were performed on the dental casts of each subject. Analysis of variance (ANOVA) was used for comparisons of the groups, and Pearson's correlation coefficients were computed to determine the interarch associations. No statistically significant intra-arch asymmetry was found for maxillary and mandibular dental arch and alveolar width in any of the three groups. All variables were larger on the right side in the normal occlusion subjects. Further, the left side maxillary dental and alveolar arch width measurements were larger in the Class II Division 1 group. None of these differences, however, were statistically significant. In the Class II subdivision group, only the Class II sides' mandibular dental arch measurements were larger (P < .05). Maxillary and mandibular total dental arch and alveolar width dimensions differed among the groups (P < .001). Except for maxillary and mandibular canine alveolar width, opposing interarch dental and alveolar landmarks were significantly correlated with the transverse dimensions. Although some landmarks in the current study showed statistically significant and insignificant differences, the mean arithmetic differences were small, inconsistent, and not likely clinically important.
    World journal of orthodontics 02/2009; 10(1):7-15.
  • [Show abstract] [Hide abstract]
    ABSTRACT: To compare the effect on the shear bond strength of orthodontic brackets when applying Pro Seal light-cure varnish to the enamel surface either before or after the application of sealant. Sixty noncarious premolars were randomly divided into 3 equal groups. In groups I and 2, Pro Seal, a fluoride-releasing light-cure varnish, was applied to the enamel surface before or after, respectively, the sealant provided with the adhesive, while group 3 (control) was bonded regularly using only the sealant supplied with the adhesive. Mono-Lok 2 no-mix bonding system was used to bond stainless steel brackets to each tooth. All teeth were embedded in self-cure acrylic, placed in steel rings, and secured in a jig attached to the base plate of a universal testing machine. A perpendicular force was applied to the bracket at a crosshead speed of 0.5 mm/min. The residual adhesive on the enamel surface was evaluated after debonding with the adhesive remnant index. The mean shear bond strength for group 1, treated with Pro Seal varnish before the sealant, was 10.06 +/- 3.11 MPa. However, for group 2, where varnish was applied after the sealant, the mean shear bond strength was 12.78 +/- 3.7 MPa, while it was 12.81 +/- 2.6 MPa for the control group. An analysis of variance test showed that the mean shear bond strengths of the 3 groups were not significantly different. The chi-square test evaluating the residual adhesive on enamel surfaces showed no significant differences between all groups. Application of Pro Seal before or after the sealant did not reduce the mean shear bond strength of orthodontic brackets. However, further studies are recommended to compare the amount of enamel protection offered in either situation.
    World journal of orthodontics 02/2008; 9(2):141-6.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: To compare 2 groups of mature patients treated with the Herbst appliance and present a new protocol based on tissue responses to enhance skeletal response. Lateral cephalograms taken before and after treatment for 2 groups of patients--the first treated with the Herbst appliance with maximum jumping and the second with the Herbst appliance with stepwise advancement--were examined with conventional cephalometric analysis and the sagittal-occlusal analysis of Pancherz to assess the dental, skeletal, and soft tissue changes. The mode of correction of the Class II malocclusion was through skeletal and dental changes. However, in the stepwise sample, the amount of correction due to skeletal changes was higher. In both groups, the soft tissue profile convexity was reduced significantly. Herbst appliance therapy can be considered a modality for the correction of skeletal Class II malocclusions in mature patients and should be added to orthodontia's armamentarium.
    World journal of orthodontics 02/2008; 9(3):233-43.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: This case report describes the treatment of an adult female with a severe Class II malocclusion and congenitally missing mandibular incisors. It was decided to extract the maxillary first premolars and use mini-implants for en masse retraction of the maxillary anterior teeth. More than 13 mm of maxillary incisor retraction was obtained, with little change in the mandibular incisor inclination. The patient's facial esthetics showed dramatic improvement. The upper and lower lips were retracted by 6 mm and 7 mm, respectively. This helped reduce the mentalis strain and improve chin projection. In the mandibular arch, the canines were reshaped to substitute for lateral incisors and the first premolars were used as canines. After 25 months of retention, the results have been maintained. In this report, mini-implants proved to be an effective alternative to orthognathic surgery.
    World journal of orthodontics 02/2008; 9(2):155-66.
  • [Show abstract] [Hide abstract]
    ABSTRACT: This article reports on a patient with severe maxillary and mandibular crowding treated by both expansion and extraction treatment. Two surgical procedures, surgically assisted palatal expansion and a mandibular midline osteotomy, were performed in sequence for skeletal expansion. A hybrid appliance, consisting of a Hyrax screw and 2 miniplates, was used in the mandible. Since expansion was not enough for relief of the crowding, 3 premolars were later extracted. The patient's final occlusion was satisfactory, but genioplasty may be desired in the future.
    World journal of orthodontics 02/2008; 9(1):26-34.
  • [Show abstract] [Hide abstract]
    ABSTRACT: The aim of this study was to investigate head posture and hyoid bone position using lateral cephalograms of adult Class III Turkish females and males. Lateral cephalograms of 69 Turkish adult Class III subjects (39 females and 30 males with a mean age of 25.7 +/- 3.6 years) taken at the natural head posture were evaluated. The individuals had parents of Turkish origin; no visual or hearing disorders; no breathing or swallowing disorders; complete dentitions (except for third molars); no previous orthodontic treatment or orthognathic surgery; and no burns, injuries, or scars on the head or neck. The linear measurement reflecting the distance between the hyoid bone and cervical vertebrae tangent, nasion-sella line, and nasion lines were significantly lower in the female group than in the male group. Also, distances between the hyoid bone and CV4ia, CV4ip, CV3ia, CV2ia, Bolton, Articulare, Hm-S, and anterior nasal spine were significantly lower in the female group than in the male group. It was found that there were no gender variations in head position between Turkish Class III adults. The linear measurements regarding the position of hyoid bone showed higher and more posterior in Turkish adult Class III female subjects, while natural head position was not affected by sex.
    World journal of orthodontics 02/2008; 9(4):391-8.
  • [Show abstract] [Hide abstract]
    ABSTRACT: This article describes the clinical application of a new superelastic Ni-Ti-stainless steel retraction spring used especially for canine retraction following the segmented archwire technique. The use of the new spring and its 2 configurations are demonstrated in a typodont experiment. Clinical experience with the new spring is presented in 2 patients; it produced canine retraction in these patients who required first premolar extraction. The use of the spring in both cases led to bodily tooth retraction without reactivation or any undesirable side effects.
    World journal of orthodontics 02/2008; 9(1):48-51.
  • [Show abstract] [Hide abstract]
    ABSTRACT: The objective of this article is to describe the various clinical situations of prolonged retention of mandibular deciduous second molars. Indications for orthodontic space closure in the absence of permanent successors and treatment alternatives in space opening, including retaining the deciduous molars, are described. Periodic monitoring, composite buildups, and indications and timing of extraction of infraoccluded and ankylosed deciduous molars with and without permanent successors are reviewed.
    World journal of orthodontics 02/2008; 9(3):209-20.
  • World journal of orthodontics 02/2008; 9(1):5.
  • World journal of orthodontics 02/2008; 9(4):301.

Related Journals