scholarly journals Dentoskeletal effects produced by removable palatal crib, bonded spurs, and chincup therapy in growing children with anterior open bite

2016 ◽  
Vol 86 (6) ◽  
pp. 969-975 ◽  
Author(s):  
Natalia Martins Insabralde ◽  
Renato Rodrigues de Almeida ◽  
José Fernando Castanha Henriques ◽  
Thais Maria Freire Fernandes ◽  
Carlos Flores-Mir ◽  
...  
Keyword(s):  
Analysis Of Variance ◽  
Open Bite ◽  
Treatment Modalities ◽  
Control Group ◽  
Anterior Open Bite ◽  
Lateral Cephalograms ◽  
Treatment Changes ◽  
Cephalometric Study ◽  
Post Hoc ◽  
Vertical Development

ABSTRACT Objective: To evaluate the dentoskeletal effects of different anterior open bite treatment modalities in children. Materials and Methods: This cephalometric study assessed changes resulting from different treatment approaches on 77 growing children with anterior open bite. A control group (n = 30) was used for comparison. Lateral cephalograms were available before treatment and after 12 months. The sample was divided into four groups: removable palatal crib associated with a chincup (G1), bonded spurs associated with a chincup (G2), chincup (G3), and nontreated control (G4). Statistical comparisons among the four groups were performed on T1 and the treatment changes using analysis of variance with Tukey's post hoc tests. Results: No statistically significant changes in skeletal variables were found among the groups, except for lower anterior face height (LAFH) increase in G1. Overall, effects in all of the treated groups were exclusively dentoalveolar. A larger overbite (OB) increase was observed in G1 and G2 when compared with G3 and G4. The maxillary incisors in G1 showed increased palatal tipping, retrusion, and more vertical dentoalveolar development as well as increased lingual tipping among mandibular incisors. There was less vertical development of maxillary and mandibular molars in G3. Conclusions: A removable palatal crib provided an improvement in OB (97.5%), followed by the bonded spurs (84.5%). Conversely, the chincup-only group did not have positive OB effects.

scholarly journals Influence of intentional ankylosis of deciduous canines to reinforce the anchorage for maxillary protraction

2013 ◽  
Vol 18 (1) ◽  
pp. 94-102 ◽  
Author(s):  
Luís Fernando Castaldi Tocci ◽  
Omar Gabriel da Silva Filho ◽  
Acácio Fuziy ◽  
José Roberto Pereira Lauris
Keyword(s):  
Mixed Dentition ◽  
Control Group ◽  
Class Iii ◽  
Maxillary Expansion ◽  
Significant Treatment ◽  
Maxillary Protraction ◽  
Lateral Cephalograms ◽  
Treatment Changes ◽  
And Gender ◽  
Cephalometric Study

INTRODUCTION: This retrospective cephalometric study analyzed the influence of intentional ankylosis of deciduous canines in patients with Class III malocclusion and anterior crossbite, in the deciduous and early mixed dentition stages, treated by orthopedic maxillary expansion followed by maxillary protraction. METHODS: Lateral cephalograms of 40 patients were used, divided in 2 groups paired for age and gender. The Ankylosis Group was composed of 20 patients (10 boys and 10 girls) treated with induced ankylosis and presenting initial and final mean ages of 7 years 4 months and 8 years 3 months, respectively, with a mean period of maxillary protraction of 11 months. The Control Group comprised 20 patients (10 boys and 10 girls) treated without induced ankylosis, with initial and final mean ages of 7 years 8 months and 8 years 7 months, respectively, with a mean period of maxillary protraction of 11 months. Two-way analysis of variance and covariance analysis were applied to compare the initial and final cephalometric variables and the treatment changes between groups. RESULTS: According to the results, the variables evidencing the significant treatment changes between groups confirmed that the intentional ankylosis enhanced the sagittal response of the apical bases (Pg-NPerp) and increased the facial convexity angles (NAP and ANB). CONCLUSIONS: The protocol involving intentional ankylosis of deciduous canines enhanced the sagittal response of the apical bases.

scholarly journals Cephalometric evaluation of adult anterior open bite non-extraction treatment with Invisalign

2017 ◽  
Vol 22 (5) ◽  
pp. 30-38 ◽  
Author(s):  
Shuka Moshiri ◽  
Eustáquio A. Araújo ◽  
Julie F. McCray ◽  
Guilherme Thiesen ◽  
Ki Beom Kim
Keyword(s):  
Open Bite ◽  
Therapeutic Modality ◽  
Occlusal Plane ◽  
Anterior Open Bite ◽  
Lower Incisor ◽  
Mandibular Plane ◽  
Lateral Cephalograms ◽  
Treatment Changes ◽  
Extraction Treatment ◽  
Lower Molar

ABSTRACT Objective: The purpose of this study was to evaluate, by means of cephalometric appraisal, the vertical effects of non-extraction treatment of adult anterior open bite with clear aligners (Invisalign system, Align Technology, Santa Clara, CA, USA). Methods: Lateral cephalograms of 30 adult patients with anterior open bite treated using Invisalign (22 females, 8 males; mean age at start of treatment: 28 years and 10 months; mean anterior open bite at start of treatment: 1.8 mm) were analyzed. Pre- and post-treatment cephalograms were traced to compare the following vertical measurements: SN to maxillary occlusal plane (SN-MxOP), SN to mandibular occlusal plane (SN-MnOP), mandibular plane to mandibular occlusal plane (MP-MnOP), SN to mandibular plane (SN-MP), SN to palatal plane (SN-PP), SN to gonion-gnathion plane (SN-GoGn), upper 1 tip to palatal plane (U1-PP), lower 1 tip to mandibular plane (L1-MP), mesiobuccal cusp of upper 6 to palatal plane (U6-PP), mesiobuccal cusp of lower 6 to mandibular plane (L6-MP), lower anterior facial height (LAFH), and overbite (OB). Paired t-tests and descriptive statistics were utilized to analyze the data and assess any significant changes resulting from treatment. Results: Statistically significant differences were found in overall treatment changes for SN-MxOP, SN-MnOP, MP-MnOP, SN-MP, SN-GoGn, L1-MP, L6-MP, LAFH, and OB. Conclusions: The Invisalign system is a viable therapeutic modality for non-extraction treatment of adult anterior mild open bites. Bite closure was mainly achieved by a combination of counterclockwise rotation of the mandibular plane, lower molar intrusion and lower incisor extrusion.

scholarly journals Treatment and Posttreatment Effects of Quad-Helix/Crib Therapy of Dentoskeletal Open Bite

2007 ◽  
Vol 77 (4) ◽  
pp. 640-645 ◽  
Author(s):  
Paola Cozza ◽  
Manuela Mucedero ◽  
Tiziano Baccetti ◽  
Lorenzo Franchi
Keyword(s):  
Nonparametric Test ◽  
Treated Group ◽  
Open Bite ◽  
Control Group ◽  
Anterior Open Bite ◽  
Mandibular Plane ◽  
Lateral Cephalograms ◽  
Thumb Sucking ◽  
Clinically Significant ◽  
Quad Helix

Abstract Objective: To investigate the effects of the quad-helix/crib (Q-H/C) appliance in subjects with thumb-sucking habits and dentoskeletal open bite at 2 years after the end of active treatment. Materials and Methods: The records of 21 subjects treated with the Q-H/C appliance were compared with a control group of 21 untreated subjects with similar vertical relationships. Lateral cephalograms were obtained before treatment (T1; mean age 8.4 ± 1.4 years) and at about 2 years after treatment (T2; mean age 11.7 ± 1.9 years) and analyzed. Mean treatment duration was 1.5 years ± 7 months. The T2–T1 changes in the two groups were compared with a nonparametric test for independent samples. Results: The mean increase in overbite during Q-H/C therapy (4.1 mm) represented an overcorrection of the amount of anterior open bite at T2. Both the maxillary and mandibular incisors showed significantly greater extrusion in the Q-H/C group than in the control group. The treated group showed a greater downward rotation (1.8°) of the palatal plane than did the control group. This change was associated with a clinically significant reduction in the palatal plane/mandibular plane angle (−2.5°) in the Q-H/C group. The upper lip showed significant retraction relative to the E-plane in the treated group (3.6 mm) compared with the controls. Conclusions: The Q-H/C appliance was effective in correcting dental open bite in 85% of the growing subjects with thumb-sucking habits and dentoskeletal open bites. Correction of anterior open bite was associated with a clinically significant improvement in maxillomandibular vertical skeletal relationships.

scholarly journals Effect of Triple Antibiotic Paste on The Bond Strength of Epoxy and Methacrylate Resin–Based Sealers to Root Canal Dentine

2021 ◽  
Author(s):  
Fereshte Sobhnamayan ◽  
Alireza Adl ◽  
Mahdi Sedigh-Shams ◽  
Hossein Mirkhaghani
Keyword(s):  
Bond Strength ◽  
Analysis Of Variance ◽  
Root Canal ◽  
Failure Modes ◽  
Treatment Modalities ◽  
Control Group ◽  
Triple Antibiotic Paste ◽  
Ah Plus ◽  
Post Hoc

Abstract Background: Triple antibiotic pastes (TAP) has gained popularity as a root canal medicament in regenerative endodontic procedures and other endodontic treatment modalities. As this medicament changes the chemical structure of dentine, it may affect the bond strength of endodontic sealers to radicular dentine. This study aimed to evaluate the effect of TAP on the bond Strength of epoxy and methacrylate resin- based sealers to root canal dentine.Methods: In this in vitro study, eighty single-rooted human mandibular premolars were prepared using ProTaper rotary system. The specimens were randomly divided into a control group (without intracanal dressing) and an experimental group receiving TAP (n = 40). The intracanal dressing was removed after three weeks. Then samples of each group were randomly divided into four subgroups (n = 10) and obturated with gutta-percha and different resin-based sealers. G1: AH Plus, G2: Syntex, G3: EndoREZ, G4: MetaSEAL. After one week, 16 Slices of 1±0.1 mm thickness were obtained from the midroots of teeth in each subgroup and a push-out test was used to measure the bond strength. Slices were examined using a stereomicroscope at 30× to determine the mode of failure. The data were analyzed using two-way analysis of variance, one- way analysis of variance and Tukey post hoc tests (α = 0.05).Results: Compared to control group, TAP significantly increased the bond strength of MetaSeal and EndoREZ (p<0.05). In the control group, epoxy resin- based sealers showed higher bond strength compared to methacrylate ones (p=0.00). In TAP group, Syntex and EndoREZ showed significantly the greatest and the lowest bond strengths respectively (p<.05). The analysis of failure modes revealed a predominance of mixed failures in all groups except for Syntex group in which most failures were cohesive.Conclusions: TAP significantly increased the bond strength of methacrylate resin- based sealers.

scholarly journals Evaluation of the stability of open bite treatment using a removable appliance with palatal crib combined with high-pull chincup

2012 ◽  
Vol 17 (6) ◽  
pp. 52-60 ◽  
Author(s):  
Fernando Pedrin Carvalho Ferreira ◽  
Renato Rodrigues de Almeida ◽  
Fernando César Torres ◽  
Renata Rodrigues de Almeida-Pedrin ◽  
Marcio Rodrigues de Almeida ◽  
...  
Keyword(s):  
Statistical Tests ◽  
Open Bite ◽  
Control Group ◽  
Anterior Open Bite ◽  
Skeletal Changes ◽  
Lateral Cephalograms ◽  
The Stability ◽  
Removable Appliance ◽  
Experimental Group

OBJECTIVE: The aim of this prospective study was to cephalometrically analyze the stability of dentoalveolar and skeletal changes produced by a removable appliance with palatal crib associated to high-pull chincup in individuals with anterior open bite treated for 12 months, and compare them to individuals with similar malocclusion and age, not submitted to orthodontic treatment, also followed for the same period. METHODS: Nineteen children with a mean age of 9.78 years old treated for 12 months with a removable appliance with palatal crib associated with chincup therapy were evaluated after 15 months (post-treatment period) and compared with a control group of 19 subjects with mean age of 9.10 years with the same malocclusion that was followed-up for the same period. Seventy-six lateral cephalograms were evaluated at T1 (after correction) and T2 (follow-up) and cephalometric variables were analyzed by statistical tests. RESULTS: The results did not show significant skeletal, soft tissue or maxillary dentoalveolar changes. Overall, treatment effects on the experimental group were maintained at T2 evaluation with an increase of 0.56 mm in overbite. Overjet and maxillary incisors/molars position (vertical and sagittal) remained essentially unchanged during the study period. Only mandibular incisors showed significant changes (labial inclination and protrusion) compared to control group. CONCLUSIONS: Thus, it can be concluded that the early open bite treatment with a removable appliance and palatal crib associated with high-pull chincup therapy provided stability of 95%.

scholarly journals Changes in mandibular shape after early treatment in subjects with open bite: a geometric morphometric analysis

2020 ◽  
Vol 42 (6) ◽  
pp. 643-649
Author(s):  
Roberta Lione ◽  
Dimitri Fusaroli ◽  
Manuela Mucedero ◽  
Valeria Paoloni ◽  
Chiara Pavoni ◽  
...  
Keyword(s):  
Open Bite ◽  
Procrustes Analysis ◽  
Control Group ◽  
Maxillary Expansion ◽  
Mandibular Ramus ◽  
Anterior Open Bite ◽  
Bite Block ◽  
Geometric Morphometric ◽  
Counterclockwise Rotation ◽  
Lateral Cephalograms

Summary Objectives To evaluate the mandibular modifications in anterior open bite (OB) growing subjects treated with Rapid Maxillary Expansion and bite block (RME/BB) or Quad Helix with crib (QH/C) when compared with a Control Group (CG) by using Geometric Morphometric Method (GMM) and conventional cephalometric. Materials The OB group comprised 34 subjects (26 girls, 8 boys) with dentoskeletal OB and a mean age of 8.0 ± 1.0 years. OB group was divided in two subgroups: RME/BB group comprised 17 subjects (13 girls, 4 boys), while QH/C group included 17 subjects (13 girls, 4 boys). The two subgroups were compared with a CG of 17 subjects (13 girls, 4 boys) matched for sex, age, vertical pattern, and observation periods. Two consecutives lateral cephalograms were available: the first one was taken before treatment (T1), and the second one was acquired at a follow-up observation at least 4 years after the completion of treatment (T2). Landmarks and semilandmarks were digitized on lateral cephalograms and GMM was applied. Procrustes analysis and principal component analysis were performed. Analysis of variance (ANOVA) with Tukey post hoc tests was used to compare the T2–T1 cephalometric changes between the RME/BB, QH/C, and CG. Results In the long term, RME/BB showed a significantly greater decrease of the Condylar axis to mandibular plane angle when compared to CG and QH/C. GMM showed an increased in height of the mandibular ramus in RME/BB group with tendency to counterclockwise rotation of the mandible when compared with QH/C and CG groups. Conclusions RME/BB subjects showed significant changes in the shape of the mandibular ramus with a counterclockwise rotation tendency when compared with QH/C and CG subjects.

scholarly journals Anterior open bite: cephalometric evaluation of the dental pattern

2006 ◽  
Vol 17 (1) ◽  
pp. 68-70 ◽  
Author(s):  
Adriana Sasso Stuani ◽  
Andréa Sasso Stuani ◽  
Maria Bernadete Sasso Stuani ◽  
Maria da Conceição Pereira Saraiva ◽  
Mírian Aiko Nakane Matsumoto
Keyword(s):  
Open Bite ◽  
Occlusal Plane ◽  
Anterior Open Bite ◽  
Panoramic Radiographs ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
Dental Origin ◽  
Dental Pattern ◽  
Mandibular Incisors

The purpose of this study was to compare the dental pattern of patients with anterior open bite malocclusion to that of individuals with normal overbite by utilization of lateral cephalograms, panoramic radiographs and study casts. The findings showed that there was no significant difference in the inclination of the occlusal plane (SN.PlO) and position of the maxillary and mandibular incisors (1-NA, 1-NB) between both groups of individuals; but the angles of inclination of the maxillary and mandibular incisors (1.1, 1.NA and 1.NB) differed statistically between patients with anterior open bite of the individuals that presented normal overbite, which suggests that the anterior open bite may be of dental origin.

scholarly journals Fracture resistance of simulated immature teeth after apexification with calcium silicate-based materials

2016 ◽  
Vol 10 (02) ◽  
pp. 188-192 ◽  
Author(s):  
Evren Ok ◽  
Mustafa Altunsoy ◽  
Mehmet Tanriver ◽  
Ismail Davut Capar ◽  
Abdussamed Kalkan ◽  
...  
Keyword(s):  
Analysis Of Variance ◽  
Calcium Silicate ◽  
Fracture Resistance ◽  
Composite Resin ◽  
Mineral Trioxide Aggregate ◽  
Control Group ◽  
Fiber Post ◽  
Immature Teeth ◽  
Post Hoc

ABSTRACT Objective: To compare the fracture resistance of simulated immature teeth filled with an apical barrier of mineral trioxide aggregate (MTA), Biodentine, and calcium-enriched mixture (CEM). Materials and Methods: Fifty-two single-rooted human maxillary central incisors were used. For standardization, the teeth were sectioned 6 mm above and 9 mm below the cementoenamel junction to simulate immature apex. Simulations of roots into immature apices were carried out using 1.5 mm diameter drills. The specimens were then randomly divided into three experimental groups (n = 13) and one control group (n = 13). In experimental groups, MTA, Biodentine, and CEM were placed to apical 4 mm of the simulated immature roots. The samples were stored at 37°C and 100% humidity for 1 week. A load was applied on the crown of all teeth at 135° to their long axis until fracture. The data were analyzed using one-way analysis of variance and Tukey post-hoc tests. Results: No statistically significant differences were found among MTA, CEM, and Biodentine (P > 0.05), and these groups demonstrated higher fracture resistance than control group (P < 0.05). Conclusions: Using any of the MTA, Biodentine, and CEM as an apical plug and restoring with fiber post and composite resin increases the fracture resistance of immature teeth.

The functional treatment of anterior-open bite: three case reports

2001 ◽  
Vol 25 (4) ◽  
pp. 275-286
Author(s):  
Banu Dinçer ◽  
Serpil Hazar
Keyword(s):  
Case Reports ◽  
Post Treatment ◽  
Open Bite ◽  
Functional Treatment ◽  
Posterior Region ◽  
Anterior Open Bite ◽  
Facial Height ◽  
Skeletal Open Bite ◽  
Vertical Development

Functional treatment of three skeletal open-bite patients with Bionator, Frankel IV and Posterior biteblock appliances is presented. Pretreatment and post treatment records were evaluated. Correction of malocclusion by changing direction of the mandibular development, adaptive bony development of the condyle, vertical development in posterior region, an increase in ramus length, a decrease in the lower facial height were observed in this report. The results of functional treatment of three appliances had different effect mechanisms.

scholarly journals Microscrew Anchorage in Skeletal Anterior Open-bite Treatment

2007 ◽  
Vol 77 (1) ◽  
pp. 47-56 ◽  
Author(s):  
Chunlei Xun ◽  
Xianglong Zeng ◽  
Xing Wang
Keyword(s):  
Alveolar Bone ◽  
Open Bite ◽  
Anterior Open Bite ◽  
Posterior Teeth ◽  
Miniscrew Implants ◽  
Mandibular Plane ◽  
Lateral Cephalograms ◽  
Patient Cooperation ◽  
Skeletal Pattern ◽  
Skeletal Open Bite

Abstract Objective: To evaluate the effectiveness of miniscrew anchorage for intrusion of the posterior dentoalveolar region to correct skeletal open bite. Materials and Methods: The study was comprised of 12 patients (aged 14.3 to 27.2 years; mean 18.7 years) with anterior open bites. All the patients presented a Class II skeletal pattern and excessive posterior growth. Self-drilling miniscrew implants were inserted into the posterior midpalatal area and the buccal alveolar bone between the lower molars. A transpalatal and a lingual arch were used to maintain the molars on each side in order to avoid overrotation during intrusion. A force of 150 g was applied to the microscrews on each side to intrude the posterior teeth. Lateral cephalograms of all 12 patients were taken preintrusion and immediately after completion of the intrusion. The cephalometric films were measured and compared. Results: The results showed that the anterior open bites in 12 patients were all corrected in a mean of 6.8 months. Overbite increased by a mean of 4.2 mm (P &lt; .001), from −2.2 mm in preintrusion to 2.0 mm in postintrusion. The maxillary and mandibular first molars were intruded for an average of 1.8 mm (P &lt; .001) and 1.2 mm (P &lt; .001), respectively. The mandibular plane angle was reduced by 2.3° (P &lt; .001), which led to a counterclockwise rotation of the mandible with a significant decrease in the anterior facial heights (mean of 1.8 mm; P &lt; .001). Conclusion: Miniscrew anchorage has the advantages of being a simpler procedure, being minimally invasive, and requiring minimal patient cooperation.

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