| 1. |
- Al Mulla, Anas H, et al.
(author)
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Modified fluoride toothpaste technique reduces caries in orthodontic patients: A longitudinal, randomized clinical trial.
- 2010
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In: American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics. - : Elsevier BV. - 1097-6752. ; 138:3, s. 285-91
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Journal article (peer-reviewed)abstract
- The hypothesis of this study was that toothpaste slurry rinsing, combined with other simple postbrushing steps (the modified fluoride toothpaste technique [MFTT]), would reduce the number of decayed and filled tooth surfaces.
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| 2. |
- Baeshen, Hosam A, et al.
(author)
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Effect of fluoridated chewing sticks (Miswaks) on white spot lesions in postorthodontic patients.
- 2011
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In: American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics. - : Elsevier BV. - 1097-6752. ; 140:3, s. 291-7
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Journal article (peer-reviewed)abstract
- INTRODUCTION: This article illustrates a new treatment method and evaluates the effect of the frequent use of fluoridated chewing sticks (miswaks) on the remineralization of white spot lesions (WSLs) diagnosed at debonding. METHODS: Thirty-seven orthodontic patients (mean age, 17.2 years), with a minimum of 4 WSLs on the buccal surfaces of the maxillary incisors, canines, premolars, and first molars after orthodontic therapy, were enrolled in a double-blind, randomized, longitudinal trial lasting 6 weeks. The subjects were divided into 2 groups using fluoridated miswaks impregnated in 0.5% sodium fluoride (test group, n = 19) and nonfluoridated miswaks (control group, n = 18). A custom-made mouth tray, covering half of the maxillary dentition, was used while brushing with the miswaks 5 times per day. The WSLs were scored by using a DIAGNOdent pen (KaVo, Biberach, Germany) and with the International Caries Detection and Assessment System (ICDAS II) index, at baseline and 2, 4, and 6 weeks after debonding. RESULTS: Both the DIAGNOdent readings and the ICDAS II index of the WSLs decreased in the test group on the uncovered side of the dentition but not on the covered side during the 6-week trial (P <0.0001). There was also a slight improvement in the control group (not significant). There was a strong correlation between the DIAGNOdent values and the ICDAS II index when all the data were pooled (P <0.001). CONCLUSIONS: The frequent use of fluoridated miswaks had a remineralizing effect on WSLs. The DIAGNOdent pen might be a useful tool for diagnosing and monitoring changes of WSLs over a relatively short period of time. .
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| 3. |
- Kim, Klara, et al.
(author)
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Clinical and microbiological findings at sites treated with orthodontic fixed appliances in adolescents.
- 2010
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In: American Journal of Orthodontics and Dentofacial Orthopedics. - 0889-5406 .- 1097-6752. ; 137:2, s. 223-228
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Journal article (peer-reviewed)abstract
- INTRODUCTION: Fixed orthodontic appliances can alter the subgingival microbiota. Our aim was to compare the subgingival microbiota and clinical parameters in adolescent subjects at sites of teeth treated with orthodontic bands with margins at (OBM) or below the gingival margin (OBSM), or with brackets (OBR).METHODS: Microbial samples were collected from 33 subjects (ages, 12-18 years) in treatment more than 6 months. The microbiota was assessed by the DNA-DNA checkerboard hybridization method.RESULTS: Bacterial samples were taken from 83 OBR,103 OBSM, and 54 OBM sites. Probing pocket depths differed by orthodontic type (P <0.001) with mean values of 2.9 mm (SD, 0.6) at OBSM sites, 2.5 mm (SD, 0.6) at OBM sites, and 2.3 mm (SD, 0.5) at OBR sites. Only Actinomyces israelii (P <0.001) and Actinomyces naeslundii (P <0.001) had higher levels at OBR sites, whereas Neisseria mucosa had higher levels at sites treated with OBSM or OBM (P <0.001). Aggregatibacter actinomycetemcomitans was found in 25% of sites independent of the appliance.CONCLUSIONS: Different types of orthodontic appliances cause minor differences in the subgingival microbiota (A israelii and A naeslundii) and higher levels at sites treated with orthodontic brackets. More sites with bleeding on probing and deeper pockets were found around orthodontic bands.
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| 4. |
- Magnusson, Anders, et al.
(author)
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Nasal cavity size, airway resistance, and subjective sensation after surgically assisted rapid maxillary expansion : A prospective longitudinal study
- 2011
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In: American Journal of Orthodontics and Dentofacial Orthopedics. - : Elsevier Masson. - 0889-5406 .- 1097-6752. ; 140:5, s. 641-651
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Journal article (peer-reviewed)abstract
- Introduction: The aims of this study were to measure changes in nasal minimum cross-sectional area and nasal airway resistance after surgically assisted rapid maxillary expansion and to explore a possible correlation with the subjective sensation of nasal obstruction. Methods: Minimum cross-sectional area and nasal airway resistance were measured in 39 consecutive patients treated with surgically assisted rapid maxillary expansion. Subjective nasal obstruction was assessed by a questionnaire at pretreatment and at 3 and 18 months postoperatively. Results: Subjective nasal obstruction had improved significantly by 3 months postoperatively. Minimum cross-sectional area increased and nasal airway resistance decreased. No correlations were found. In subjects with pretreatment subjective nasal obstruction and initially narrow anterior minimum cross-sectional area, there was a significant correlation between a moderate increase in anterior minimum cross-sectional area and improvement in perceived nasal obstruction. Eighteen months postoperatively, no changes were found from pretreatment values for subjective nasal obstruction, minimal cross-sectional area, or nasal airway resistance, and there were no correlations. Subjects with a sensation of nasal obstruction at treatment start reported a lasting significant subjective improvement. Conclusions: The postoperative effects of surgically assisted rapid maxillary expansion did not persist in the long term. No correlation was found between objective and subjective findings. Subjects with pretreatment nasal obstruction, however, reported a lasting sensation of improved nasal function after surgically assisted rapid maxillary expansion.
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| 5. |
- Magnusson, Anders, et al.
(author)
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Three-dimensional assessment of transverse skeletal changes after surgically assisted rapid maxillary expansion and orthodontic treatment: A prospective computerized tomography study
- 2012
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In: American Journal of Orthodontics and Dentofacial Orthopedics. - : Elsevier Masson. - 0889-5406 .- 1097-6752. ; 142:6, s. 825-833
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Journal article (peer-reviewed)abstract
- Introduction: The aim of this prospective longitudinal study was to evaluate transverse skeletal changes after surgically assisted rapid maxillary expansion. The changes were registered by using a 3-dimensional computerized tomography technique based on superimposition on the anterior base of the skull. Methods: The subjects comprised 35 patients (mean age, 19.7 years; range, 16.1-43.9 years). Low-dose, helical computerized tomography images were taken at treatment start and after orthodontic treatment. The 3-dimensional models were registered and superimposed at the anterior cranial base. Results: Surgically assisted rapid maxillary expansion had a significant transverse skeletal treatment effect, significantly greater posteriorly than anteriorly. The expansion was parallel anteriorly, but posteriorly there was significant transverse tipping. Although there was no statistically significant difference between the changes at the corresponding landmarks, the range of standard deviations was marked. Conclusions: The results showed that, for registering transverse skeletal changes after surgically assisted rapid maxillary expansion, 3-dimensional superimposition is a reliable method, circumventing projection and measurement errors. Surgically assisted rapid maxillary expansion had a significant but nonuniform skeletal treatment effect. Despite careful surgical separation, pronounced posterior tipping occurred. No correlation was found between the severity of tipping and the patients age. (Am J Orthod Dentofacial Orthop 2012;142:825-33)
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| 6. |
- Pancherz, Hans, et al.
(author)
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Mandibular incisor inclination, tooth irregularity, and gingival recessions after Herbst therapy : a 32-year follow-up study
- 2014
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In: American Journal of Orthodontics and Dentofacial Orthopedics. - : Elsevier. - 0889-5406 .- 1097-6752. ; 146:3, s. 310-318
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Journal article (peer-reviewed)abstract
- INTRODUCTION: The aim of this study was to analyze the very long-term results after Herbst treatment with respect to changes in the mandibular incisor segment: incisor inclination, incisor alignment, and gingival status. METHODS: Fourteen patients were derived from a sample of 22 consecutive patients with Class II Division 1 malocclusions treated with the banded Herbst appliance. Intraoral photographs, mandibular dental casts, and lateral head films were analyzed from before (T1, age 12.5 years) and after (T2, age 14 years) treatment, and at 6 years (T3, age 20 years) and 32 years (T4, age 46 years) after treatment. RESULTS: At T1, incisor inclination in the 14 subjects was, on average, 100.1°. From T1 to T2, the incisors were proclined in 11 (79%) of the 14 patients, with an average value of 5.2°. Maximum proclinations of 10° were found in 2 subjects. From T2 to T4, tooth inclination recovered completely in 7 (63%) of the 11 patients. Incisor irregularity values were, on average, 3.4 mm at T1 and 3.0 mm at T2. These increased from T2 to T4 by 40% and had an average value of 5.0 mm at T4. Clinically insignificant labial gingival recessions on single front teeth were registered in 1 subject at T2 and in 8 subjects at T4. Gingival recessions were seen especially on bodily displaced incisors. CONCLUSIONS: In Herbst patients followed for 32 years after therapy, proclined mandibular incisors generally rebounded. The increase in posttreatment incisor tooth irregularity was not thought to be related to incisor tooth inclination changes but more likely resulted from physiologic processes occurring throughout life. Minor gingival recessions (especially on bodily displaced and crowded canines and incisors) seen in a few patients, 32 years after treatment, seemed not to be related to the posttreatment tooth inclination changes.
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| 7. |
- Pancherz, Hans, et al.
(author)
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Thirty-two-year follow-up study of Herbst therapy : a biometric dental cast analysis
- 2014
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In: American Journal of Orthodontics and Dentofacial Orthopedics. - : Elsevier. - 0889-5406 .- 1097-6752. ; 145:1, s. 15-27
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Journal article (peer-reviewed)abstract
- INTRODUCTION: The aim of this study was to analyze the very long-term effects of Herbst treatment on tooth position and occlusion. SUBJECTS: Fourteen patients from a sample of 22 with Class II Division 1 malocclusions consecutively treated with the banded Herbst appliance were reexamined 32 years after therapy. METHODS: Dental casts were analyzed from before (T1) and after (T2) treatment, and at 6 years (T3) and 32 years (T4) after treatment. RESULTS: Minor changes in maxillary and mandibular dental arch perimeters and arch widths were seen during treatment (T1-T2) and posttreatment (T2-T4). Mandibular incisor irregularity remained, on average, unchanged from T1 to T2 but increased continuously during the 32-year follow-up period (T2-T4). Class II molar and canine relationships were normalized in most patients from T1 to T2. During the early posttreatment period (T2-T3), there was a minor relapse; during the late posttreatment period (T3-T4), molar and canine relationships remained, on average, unchanged. Overjet and overbite were reduced to normal values in all subjects during treatment (T1-T2). After treatment (T2-T4), overjet remained, on average, unchanged, but overbite increased insignificantly. CONCLUSIONS: Thirty-two years after Herbst therapy, overall, acceptable long-term results were seen. Stability was found in 64% of the patients for sagittal molar relationships, in 14% for sagittal canine relationships, in 86% for overjet, and in 86% for overbite. A Class II relapse seemed to be caused by an unstable interdigitation of the occluding teeth, a persisting oral habit, or an insufficient retention regimen after treatment. Most posttreatment changes occurred during the first 6 years after treatment. After the age of 20 years, only minor changes were noted. Long-term posttreatment changes in maxillary and mandibular dental arch perimeters and widths as well as in mandibular incisor irregularity seemed to be independent of treatment and a result of physiologic dentoskeletal changes throughout adulthood.
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| 8. |
- Petrén, Sofia, et al.
(author)
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Stability of unilateral posterior crossbite correction in the mixed dentition : a randomized clinical trial with a 3-year follow-up.
- 2011
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In: American Journal of Orthodontics and Dentofacial Orthopedics. - : Elsevier. - 0889-5406 .- 1097-6752. ; 139:1, s. e73-81
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Journal article (peer-reviewed)abstract
- INTRODUCTION: The long-term stability of posterior crossbite correction in the mixed dentition has not been sufficiently evaluated. Our aim was to compare long-term outcomes in patients with crossbite correction by using matched controls with normal occlusion.METHODS: After 35 patients were treated for crossbite with a quad-helix or an expansion plate, we used randomized controlled trial methodology to follow them for 3 years posttreatment. All had fulfilled our pretreatment criteria: mixed dentition, unilateral posterior crossbite, no sucking habits, and no previous orthodontic treatment. Transverse relationships, maxillary and mandibular widths, overbite, overjet, arch lengths, and midlines were registered on the study models immediately before and after treatment and at the follow-up 3 years after treatment. The matched control group comprised 20 subjects with normal occlusion and was compared with the first and last registrations for the treated groups.RESULTS: At follow-up, changes in the treatment groups were equal and stable. The changes were comparable with the control group. All other changes were minor and had no clinical implications. The long-term effect of crossbite correction on midline deviation was unpredictable.CONCLUSIONS: If crossbite is successfully corrected by the quad-helix appliance or the expansion plate, similar long-term stability is achieved. However, in treated patients, mean maxillary widths never reached those of normal control subjects.
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| 9. |
- Sarnas, Karl-Victor, et al.
(author)
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Mandibular widening in hemifacial microsomia: A roentgen stereometric study of 11 patients with the aid of metallic implants
- 2012
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In: American Journal of Orthodontics and Dentofacial Orthopedics. - : Elsevier BV. - 1097-6752 .- 0889-5406. ; 141:4, s. 88-91
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Journal article (peer-reviewed)abstract
- Introduction: Our objective was to study mandibular widening in untreated subjects with hemifacial microsomia. Methods: From the 3-dimensional files at the Department of Plastic and Reconstructive Surgery, Skane University Hospital in Malmo, Sweden, data of 11 subjects (3 girls, 8 boys) with hemifacial microsomia were retrieved. Their age range was 9 years 2 months to 13 years 2 months at the first examination. The mean observation period was 5 years 2 months. Each subject was studied by roentgen stereophotogrammetry with the aid of metallic implants. Results: A significant widening of the mandible was found, with a mean total change of 0.31 mm (range, 0.08-0.79 mm) and a mean annual change of 0.07 mm (range, 0.03-0.12 mm). In 2 subjects, narrowing of the mandible was found: -0.16 and -0.23 mm. Conclusions: The mandible got wider during adolescence in 9 of our subjects with hemifacial microsomia but to a lesser extent than has been reported in subjects without hemifacial microsomia and from ordinary orthodontic clinics. Sex difference was not addressed. It was suggested that chewing (forces and patterns) was responsible for the mandibular widening in our subjects; this is in line with previous research. (Am J Orthod Dentofacial Orthop 2012;141:S88-91)
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| 10. |
- Shungin, Dmitry, et al.
(author)
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Orthodontic treatment-related white spot lesions : a 14-year prospective quantitative follow-up, including bonding material assessment.
- 2010
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In: American Journal of Orthodontics and Dentofacial Orthopedics. - : Elsevier BV. - 0889-5406 .- 1097-6752. ; 138:2, s. 136.e1-8; discussion 136
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Journal article (peer-reviewed)abstract
- INTRODUCTION: White spots (WS) related to orthodontic treatment are severe cariologic and cosmetic complications, but they are shown to be partially reduced by remineralization or abrasion in short-term follow-ups. In this prospective study, we quantitatively analyzed changes in WS in general and in treatment-related white spot lesions (WSL) during orthodontic treatment and at a 12-year follow-up after treatment. In addition, we quantitatively compared the effects of an acrylic bonding material vs a glass ionomer cement (GIC) on WSL. METHODS: Sum areas of WS and WSL were calculated on scans of standardized photos of the vestibular surfaces of 4 teeth in consecutive orthodontic patients (median treatment time, 1.7 years) bonded with the 2 materials in a split-mouth design. Comparisons were made in 59 patients before treatment (BF), at debonding (T0), at 1 year (T1), and at 2 years (T2), and in 30 patients at a 12-year follow-up (T3) with the Friedman test followed by pairwise comparisons with the Wilcoxon matched-pairs signed rank test. Differences of the effects of acrylic vs GIC on the sum areas of WSL were tested for each observation period with the Mann-Whitney U test. RESULTS: Increases in the sum areas of WS and WSL from BF to T0 (P <0.001) were followed by significant decreases at T1 (P <0.001) and T2 (P <0.01 for WS; P <0.001 for WSL). Significant changes were also found in the sum areas for WS at T3 compared with T2 (P <0.01), but not for WSL (P = 0.328). The sum areas of WS and WSL at T3 did not return to BF levels (P <0.001). Sum areas of WSL were higher for surfaces bonded with acrylic compared with GIC for each observation period from BF to T2 (P >0.001), and from T2 to T3 (P >0.05). CONCLUSIONS: Although significantly reduced during the 12-year follow-up and significantly lower with the GIC than the acrylic material at bonding, WSL are a cariologic and cosmetic problem for many orthodontic patients.
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