Combining functional appliances in the straightwire system

Derek Mahony

doi:10.17796/jcpd.26.2.r617n2568mq4403v

Combining functional appliances in the straightwire system

Journal of Clinical Pediatric Dentistry ◽

10.17796/jcpd.26.2.r617n2568mq4403v ◽

2003 ◽

Vol 26 (2) ◽

pp. 137-140 ◽

Cited By ~ 1

Author(s):

Derek Mahony

Keyword(s):

Fixed Appliance ◽

Functional Appliances ◽

Speed Up

The Trainer for Braces (T4B) helps speed up fixed appliance therapy, by derotating teeth and pushing them into the line of the arch. It also aids treatment stability by reducing the influence of undesirable myo-functional habits and retraining the oral musculature. I issue a T4B to all my patients on the day of bracket placement. I have noticed a 30% reduction in treatment times for those patients who wear the T4B as directed.

Download Full-text

Two-Phase Treatment of a Growing Patient with a Skeletal Class II

Journal of Contemporary Dentistry ◽

10.5005/jp-journals-10031-1033 ◽

2013 ◽

Vol 3 (1) ◽

pp. 40-43

Author(s):

Shashank Sharad Gaikwad ◽

Manish Suresh Sonawane ◽

Girish Ramchandra Karandikar ◽

Priyanka Anil Pawar ◽

Shaili Sanjay Shah

Keyword(s):

Class Ii ◽

Two Phase ◽

Lower Lip ◽

Fixed Appliance ◽

Twin Block ◽

Skeletal Class ◽

Skeletal Class Ii ◽

Space Closure ◽

Skeletal Change ◽

Functional Appliances

ABSTRACT Functional appliances have been used for many years in the treatment of class II malocclusions. They redirect the growth of mandible bringing about a skeletal change in a growing patient. In case of any remaining dental discrepancy, a fixed appliance is obligatory. This patient was an 11-year-old growing female with a convex profile, receding chin, lower lip trap, class II skeletal and dental relationship, a large overjet and overbite and a high maxillary labial frenum attachment. Treatment started with the Twin-block appliance with an expansion screw to achieve transverse correction, promote growth of the mandible and improve her profile. This was followed by fixed appliance mechanotherapy to align and level the dentition, close spaces and retract the maxillary anteriors. Frenectomy was carried out after space closure. How to cite this article Sonawane MS, Karandikar GR, Gaikwad SS, Pawar PA, Shah SS. Two-Phase Treatment of a Growing Patient with a Skeletal Class II. J Contemp Dent 2013;3(1):40-43.

Download Full-text

FUNCTIONAL TREATMENT OBJECTIVE-ROLE IN TWO PHASE TREATMENT

CODS Journal of Dentistry ◽

10.5005/cods-5-2-9 ◽

2013 ◽

Vol 5 (2) ◽

pp. 9-12

Author(s):

G. Shivaprakash

Keyword(s):

Class Ii ◽

Functional Treatment ◽

Growth Spurt ◽

Dental Arch ◽

Full Time ◽

Two Phase ◽

Fixed Appliance ◽

Functional Appliances ◽

Treatment Objective ◽

Distal Occlusion

ABSTRACT A distal occlusion exerts restraining occlusal forces on the mandibular dentition, and the maxillary dental arch is narrow from distal positioning of the lower dentition. These factors may not allow the mandible to grow to its full genetic potential In severe class II. In the hands of an experienced clinician, full time functional appliances are most efficient in correcting severe class II malocclusion than conventional fixed appliance techniques without mandibular propulsion. This is especially true when the treatment is timed to coincide with the pubertal growth spurt. A case successfully treated with two phase treatment to meet the functional treatment objective is presented.

Download Full-text

Treatment effects of fixed functional appliances alone or in combination with multibracket appliances: A systematic review and meta-analysis

The Angle Orthodontist ◽

10.2319/102813-790.1 ◽

2014 ◽

Vol 85 (3) ◽

pp. 480-492 ◽

Cited By ~ 41

Author(s):

Giuseppe Perinetti ◽

Jasmina Primožič ◽

Giovanna Furlani ◽

Lorenzo Franchi ◽

Luca Contardo

Keyword(s):

Meta Analysis ◽

Class Ii ◽

Cochrane Library ◽

Control Group ◽

Comprehensive Treatment ◽

Class Ii Malocclusion ◽

Fixed Appliance ◽

Manual Search ◽

Functional Appliances ◽

Skeletal Effects

ABSTRACT Objective: To assess skeletal and dentoalveolar effects of fixed functional appliances, alone or in combination with multibracket appliances (comprehensive treatment), on Class II malocclusion in pubertal and postpubertal patients. Materials and Methods: Literature survey was conducted using the Medline, SCOPUS, LILACS, and SciELO databases and The Cochrane Library, and through a manual search. The studies retrieved had to have a matched untreated control group. No restrictions were set regarding the type of fixed appliance, treatment length, or to the cephalometric analysis used. Data extraction was mostly predefined at the protocol stage by two authors. Supplementary mandibular elongation was used for the meta-analysis. Results: Twelve articles qualified for the final analysis of which eight articles were on pubertal patients and four were on postpubertal patients. Overall supplementary total mandibular elongations as mean (95% confidence interval) were 1.95 mm (1.47 to 2.44) and 2.22 mm (1.63 to 2.82) among pubertal patients and −1.73 mm (−2.60 to −0.86) and 0.44 mm (−0.78 to 1.66) among postpubertal patients, for the functional and comprehensive treatments, respectively. For pubertal subjects, maxillary growth restraint was also reported. Nevertheless, skeletal effects alone would not account for the whole Class II correction even in pubertal subjects with dentoalveolar effects always present. Conclusions: Fixed functional treatment is effective in treating Class II malocclusion with skeletal effects when performed during the pubertal growth phase, very few data are available on postpubertal patients.

Download Full-text

Mini-Implants: New Possibilities in Interdisciplinary Treatment Approaches

Case Reports in Dentistry ◽

10.1155/2014/140760 ◽

2014 ◽

Vol 2014 ◽

pp. 1-5 ◽

Cited By ~ 3

Author(s):

Biju Sebastian

Keyword(s):

Orthodontic Treatment ◽

Interdisciplinary Treatment ◽

Facial Appearance ◽

Treatment Approaches ◽

Fixed Appliance ◽

Mini Implants ◽

Anterior Teeth ◽

Functional Appliances ◽

Mutilated Dentition ◽

Complex Cases

The introduction of mini-implants has broadened the range of tooth movements possible by fixed appliance therapy alone. The limits of fixed orthodontic treatment have become more a matter of facial appearance than anchorage. Many complex cases which would previously have required surgery or functional appliances can now be treated with fixed appliance therapy using mini-implants. A mutilated dentition case where mini-implants were used to provide anchorage for intrusion of molars and retraction of anterior teeth is reported here to illustrate this point.

Download Full-text

Scanning x-ray fluorescence microscopy and principal component analysis

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100133394 ◽

1992 ◽

Vol 50 (2) ◽

pp. 1752-1753

Author(s):

Brian Cross

Keyword(s):

Principal Component Analysis ◽

Fluorescence Microscopy ◽

Spatial Resolution ◽

High Speed ◽

Image Acquisition ◽

Principal Component ◽

Fluorescence Microscope ◽

Acquisition Rate ◽

X Ray ◽

Speed Up

A relatively new entry, in the field of microscopy, is the Scanning X-Ray Fluorescence Microscope (SXRFM). Using this type of instrument (e.g. Kevex Omicron X-ray Microprobe), one can obtain multiple elemental x-ray images, from the analysis of materials which show heterogeneity. The SXRFM obtains images by collimating an x-ray beam (e.g. 100 μm diameter), and then scanning the sample with a high-speed x-y stage. To speed up the image acquisition, data is acquired "on-the-fly" by slew-scanning the stage along the x-axis, like a TV or SEM scan. To reduce the overhead from "fly-back," the images can be acquired by bi-directional scanning of the x-axis. This results in very little overhead with the re-positioning of the sample stage. The image acquisition rate is dominated by the x-ray acquisition rate. Therefore, the total x-ray image acquisition rate, using the SXRFM, is very comparable to an SEM. Although the x-ray spatial resolution of the SXRFM is worse than an SEM (say 100 vs. 2 μm), there are several other advantages.

Download Full-text

Direct measurement of electron-diffraction-pattern intensities using an energy loss spectrometer

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100155311 ◽

1989 ◽

Vol 47 ◽

pp. 668-669

Author(s):

A. G. Jackson ◽

M. Rowe

Keyword(s):

Thermal Effects ◽

Dynamic Range ◽

Scattering Amplitude ◽

Dynamical Theory ◽

Site Symmetry ◽

Proof Of Concept ◽

Parallel Acquisition ◽

Kinematic Approximation ◽

Speed Up ◽

Structure Calculations

Diffraction intensities from intermetallic compounds are, in the kinematic approximation, proportional to the scattering amplitude from the element doing the scattering. More detailed calculations have shown that site symmetry and occupation by various atom species also affects the intensity in a diffracted beam. [1] Hence, by measuring the intensities of beams, or their ratios, the occupancy can be estimated. Measurement of the intensity values also allows structure calculations to be made to determine the spatial distribution of the potentials doing the scattering. Thermal effects are also present as a background contribution. Inelastic effects such as loss or absorption/excitation complicate the intensity behavior, and dynamical theory is required to estimate the intensity value.The dynamic range of currents in diffracted beams can be 104or 105:1. Hence, detection of such information requires a means for collecting the intensity over a signal-to-noise range beyond that obtainable with a single film plate, which has a S/N of about 103:1. Although such a collection system is not available currently, a simple system consisting of instrumentation on an existing STEM can be used as a proof of concept which has a S/N of about 255:1, limited by the 8 bit pixel attributes used in the electronics. Use of 24 bit pixel attributes would easily allowthe desired noise range to be attained in the processing instrumentation. The S/N of the scintillator used by the photoelectron sensor is about 106 to 1, well beyond the S/N goal. The trade-off that must be made is the time for acquiring the signal, since the pattern can be obtained in seconds using film plates, compared to 10 to 20 minutes for a pattern to be acquired using the digital scan. Parallel acquisition would, of course, speed up this process immensely.

Download Full-text

How to speed up to be in time: Action-judgment dissociations in children and adults

Swiss Journal of Psychology ◽

10.1024/1421-0185.63.1.17 ◽

2004 ◽

Vol 63 (1) ◽

pp. 17-29 ◽

Cited By ~ 4

Author(s):

Friedrich Wilkening ◽

Claudia Martin

Keyword(s):

Rating Scale ◽

Constant Speed ◽

Linear Condition ◽

Speed Up ◽

Nonlinear Condition ◽

Speed Change ◽

Catch Up ◽

Normative Rule ◽

Judgment Condition ◽

Time Linear

Children 6 and 10 years of age and adults were asked how fast a toy car had to be to catch up with another car, the latter moving with a constant speed throughout. The speed change was required either after half of the time (linear condition) or half of the distance (nonlinear condition), and responses were given either on a rating scale (judgment condition) or by actually producing the motion (action condition). In the linear condition, the data patterns for both judgments and actions were in accordance with the normative rule at all ages. This was not true for the nonlinear condition, where children’s and adults’ judgment and also children’s action patterns were linear, and only adults’ action patterns were in line with the nonlinearity principle. Discussing the reasons for the misconceptions and for the action-judgment dissociations, a claim is made for a new view on the development of children’s concepts of time and speed.

Download Full-text