Abstract Objectives The aim of this study was to clarify the applied initial forces and moments by different aligners various materials manufacturing methods. Methods finite-element-method used analyze generated on a maloccluded tooth. Plaster models dental arches with mesiorotated tooth 11 were fabricated, digitized virtually analyzed. Four types layer thicknesses selected: two splints novel shape memory properties: printable aligner made resin Tera Harz TC-85 DAC (Graphy Inc., South Korea)...

Aim: This in vitro study investigates the limit of expansion forces and torque wrench developed by five skeletal bone expander designs (MICRO 2/4 expanders™) for clinical application. Material Methods: A total 30 expanders were placed artificial blocks mechanically tested, simulating maxillary expansion. Differences jackscrew (Dentaurum™ [D], Superscrew™ [S] Powerscrew™ [P]), number orthodontic mini-implants (OMIs; two or four) their placement inclinations (parallel 0° 10° inclination) form...

The present study evaluated the temporal release of Co Cr, Mn, and Ni from components a typical orthodontic appliance during simulated treatment.Several commercially available types bands, brackets, wires were exposed to an artificial saliva solution for at least 44 days metals released quantified in regular intervals using inductively coupled plasma quadrupole mass spectrometry (ICP-MS, Elan DRC+, Perkin Elmer, USA). Corrosion products encountered on some investigated by scanning electron...

To investigate the skeletal and dental changes during chincup versus facemask treatment, to compare long-term effects of two appliances, document impact each on treatment success. In all, 61 patients with Class III syndrome were retrospectively analyzed at three examination times: 7.8 ± 1.7 years age (T0, pretreatment), 9.6 2.4 (T1, posttreatment), around 15–20 later (T2, follow-up). Significant specific cephalometric parameters for all T0–T1 (SNA, interbase gonial angle, Björk's sum...

The aim of this study was to compare, by shear testing, the bond strengths after 1 and 24 hours a light-cured resin (Enlight) glass ionomer cement GIC (Fuji Ortho LC) using various polymerization lamps (halogen, high performance halogen, xenon, diode) for direct bonding brackets. self-curing (Concise) used as control. analysis carried out SPSS program. For group comparison purposes, single factor variance (ANOVA) post-hoc test (Tukey's HSD) were used. level significance established at P <...

The aim was to test which component [wire arm, connecting abutment attachment, and orthodontic mini-implant (OMI)] of the force-transmitting system (FTS) in anterior palate three commonly used hybrid expanders (HEs; WILMES-HE, LUDWIG-HE, WINSAUER-HE) deforms under increasing load.Crude single double wire arms were tested individually. Non-opening maxillae halves simulated artificial bone blocks with FTS specimens. OMIs inserted 8mm underwent 6mm continuous static lateral loading. Deformation...

An average rate of bracket loss between 4.7 and 6 per cent is to be expected in daily clinical orthodontic practice during a typical 2 year treatment period. For reasons economy, detached brackets are commonly reattached after sandblasting remove adhesive, or replaced with used reconditioned by specialist companies. In the present study, bracket-reconditioning procedures were systematically compared comparative shear testing rebonded, reconditioned, new (n = 160) using light- chemically...

The aim of this study was to compare polymerization lamps various technologies (halogen, high performance halogen, xenon, i.e. plasma arc, as well diode lamps) determine the degree composite probes using Fourier-transform infrared (FTIR) spectroscopy. To observe light-induced curing reaction under a bracket, an attenuated total reflection (ATR)–FTIR used. results showed that recommended times for all tested were adequate successful used (degree conversion approximately 60 per cent, which did...

The aim of this in vitro study was to investigate both shear bond strength (SBS) by testing indirectly bonded brackets, and the accuracy a new transfer method, Aptus bonding device (ABD). For comparison, SBS directly brackets two experimental arrangements also measured. precision positioning indirect bracket assessed photographic superimposition three-dimensional (3D) measurement positions on working plaster models using 3D laser scan. Statistical analysis carried out means descriptive...

Muchitsch A. P., Winsauer H., Wendl B., Pichelmayer M., Kuljuh E., Szalay A., M. Remodelling of the palatal dome following rapid maxillary expansion (RME): laser scan‐quantifications during a low growth period. Orthod Craniofac Res 2012; 15 :30–38 © John Wiley &amp; Sons A/S Structured Abstract Objectives – To evaluate changes in vault after (RME) with bonded splint appliances. Setting and Sample Population The sample comprised 24 children (12 boys 12 girls) mixed dentition (mean age 8.3...

Digital workflows have become integral in orthodontic diagnosis and therapy, reducing risk factors chair time with one-visit protocols. This study assessed the transfer accuracy of fully digital planned insertion guides for mini-implants (OMIs) compared freehanded insertion. Cone-beam computed tomography (CBCT) datasets intraoral surface scans 32 cadaver maxillae were used to place 64 miniscrews anterior palate. Three groups formed, two using printed (A B) one freehand (C). Group A...

Despite recommendations for early treatment of hereditary Angle Class III syndrome, late pubertal growth may cause a relapse requiring surgical intervention. This study was performed to identify predictors successful treatment. Thirty-eight patients treated with chincup were retrospectively analyzed. Data collected from the data archive, cephalograms, and casts, including pretreatment (T0) posttreatment (T1) data, as well long-term follow-up approximately 25 years after (T2). Each patient...

In order to apply high, short-term forces during rapid maxillary expansion (RME) the sutures of maxilla with minimum loss force and without causing unwanted side-effects (dentoalveolar tipping, etc.), appliance should be as rigid possible. The retention arms RME screws, representing a particularly vulnerable stressed weak point appliances, were focus this laboratory technical study. Retention 16 types screws comprising four one eight examined using three-point bending test. According their...

To assess early versus late treatment of Class III syndrome for skeletal and dental differences.Thirty-eight patients treated with a chincup were retrospectively analyzed. Baseline data obtained by reviewing pretreatment (T0) anamnestic records, cephalograms, casts. The cases assigned to an or group based on age at T0 (up 9 years older than but before the pubertal growth spurt). Both groups further compared posttreatment (T1) long-term follow-up collected approximately 25 after (T2).Early...

Self-etching primers have simplified the process of direct bonding dental resins, by eliminating rinsing step after etching in conventional bonding, for example. Although it is generally assumed that all applied self-etching primer incorporated into resin, possibility a substantial amount remains free and extractable person’s saliva has not been investigated. The aim present study was to examine this issue brackets extracted teeth with under controlled conditions determining proportion...

<b>Ziel:</b> dieser Arbeit war es, das Klasse-III-Syndrom nach morphologischen Kriterien einzuteilen und deren Häufigkeit die Unterschiede zwischen den einzelnen Formen im Therapieverlauf zu ermitteln. <b>Material Methoden:</b> Im Rahmen einer retrospektiven Analyse wurden 54 Patienten mit einem 3 Zeitpunkten nachuntersucht (Ausgangssituation 6–9 Jahren, Evaluierung Therapie Langzeitkontrolle beim ausgewachsenen ca. 25 Jahren). Zur Einteilung nur Anfangsunterlagen (vor Therapiebeginn)...

Zusammenfassung Minischrauben sind Mittel der Wahl, wenn maximale temporäre Verankerung gefordert wird. Compliance-Unabhängigkeit, niedrige Kosten und eine hohe Erfolgsrate machen diese Systeme klinisch so relevant. Ziel dieser Arbeit war die Nachuntersuchung von 246 gesetzten Minischrauben. Diese waren monokortikal ohne Vorbohrung gesetzt kieferorthopädisch sowohl direkt als auch indirekt belastet worden. Die statistische Auswertung ergab 87,8%. Hauptgrund für einen vorzeitigen...

The aim of the work was to develop a new transfer method for indirect bonding brackets improve bond strength by applying uniform contact pressure over entire dental arch. This has great potential reduce bracket loss rate during clinical treatment. A suitable shape memory polymer (SMP) selected and prepared in chemistry laboratory. SMP applies force thus increases pressure. Various trays were equipped with platelets from plaster model real human tooth performed vitro. accuracy bonded...

Orthodontic gap closure is an important alternative to prosthetic restorations on implants. However, the presence of bone sufficient quality and quantity critical proper tooth movement in maxilla, especially patients with a markedly enlarged maxillary sinus. These two case reports demonstrate new method facilitate bodily through sinus help interdisciplinary surgical approach (sinus lift augmentation).

The occurrence of multiple supernumerary teeth in the absence systemic disease is uncommon and therapy requires interdisciplinary collaboration.We hereby report cases treatment process two brothers having 10 7 impacted with class III symptoms.

Zusammenfassung In dieser Arbeit wurde die Haftfestigkeit vorbeschichteter Brackets mit Brackets, bei denen der Kleber erst beim Bonding auf Bracketbasis aufgebracht wird, verglichen. Die geklebten am Schmelz mittels Abscherversuche einer Instronmessmaschine (Vorschubgeschwindigkeit 0,5 mm/Min) ermittelt und verbliebene Kleberanteil dem modifizierten Adhesive Remnant Index=ARI (Stereomikroskop Fa. Zeiss) bestimmt. Auswertung erfolgte SPSS-Programm. Beim Vergleich zweier Mittelwerte T-Test...