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Aquasil ultra lv

Manufactured by Dentsply
Sourced in Germany, United States

Aquasil Ultra LV is a low-viscosity impression material manufactured by Dentsply. It is designed for use in dental impression procedures.

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4 protocols using aquasil ultra lv

1

Volumetric and Linear Dental Impressions

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Dental impressions were obtained twice (at 1 month and 3 months post-surgery) using impression materials (Aquasil Ultra LV and Aquasil Ultra XLV; Dentsply DeTrey, Konstanz, Germany) and individual trays made by a 3D printer. Dental casts were poured out of dental stone (GC Fujirock type 4; GC Corporation, Tokyo, Japan) and digitized using a dental scanner (ZEISS COMET 5M, Oberkochen, Germany).
The scanned STL file was superimposed on the basis of static points (non-moving reference point: canine and first molar) using a 3D metrology problem (Geomagic Design X and Control X; 3D Systems, Rock Hill, SC, USA). The volumetric and linear measurements were performed in the overlapping state (Figure 3C and D).
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2

Custom Tray Molding and Definitive Impression Procedure

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Using one of the custom trays, border molding was completed by the operator with the conventional method with low fusing impression compound (DPI Pinnacle, The Bombay Burmah Trading Corporation Ltd., Mumbai, Maharashtra, India). Buccal and labial molding was carried out by adding softened low fusing impression compound in sections to the tray borders and moving the lips and cheeks upward, forward, and downward. Posterior palatal seal was functionally recorded by applying the softened compound from one hamular notch to other and instructing the patient in valsalva maneuver[13 (link)] [Figure 1a]. Any excess material flowing onto the ridge area was scrapped using a Bard-Parker blade (Aspen Surgical Products, Caledonia, USA). After the wax spacer was removed, holes were made in the tray over the median palatal raphe, anterolateral and posterolateral regions of the hard palate[1 ] for relief as well as to aid in the retention of the impression material. A tray adhesive (Universal Tray Adhesive, Zhermack, Italy) was applied to the inner surface of the tray. This was followed by making a definitive impression using light viscosity addition silicone (Aquasil Ultra LV, Dentsply, USA) [Figure 1b].
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3

Replica Fabrication for Dental Restoration Evaluation

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After 14 days (baseline) and at each follow-up visit, impressions of the restorations were taken. Two impressions were taken with a low-viscosity A-silicone (Aquasil Ultra LV, Dentsply, Konstanz, Germany), whereby the first impression was discarded in each case in order to bind and remove any residual debris that might have remained despite surface cleaning. The study teeth were cleaned with a soft rotating brush and dried with oil-free compressed air. A small amount of impression material was blown into a thin film towards the sulcus and approximal region with a gentle air stream. Additional impression material was then applied until the impression achieved the required stability. The impression was removed, disinfected, and embedded in Aquasil Soft putty (Dentsply, Konstanz, Germany).
For replica fabrication conducted in the clinic’s research laboratory, the impressions were poured with an epoxy resin (Stycast 1266; Emerson & Cuming, Westerlo, Belgium) under controlled conditions. The replicas were trimmed, mounted with carbon (Leit-C-Plast, Neubauer Chemicals, Münster, Germany) on metal sample plates (sample plate with pen, 12 mm, Plano GmbH, Wetzlar, Germany), and sputtered with gold (10 nm, LOT MiniSputterCoater Automatic MSC1T, Liebscher GmbH, Schöffengrund, Germany). For a blinded evaluation, they were randomly labeled with a number later decoded for statistical analysis.
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4

Quantifying Dental Changes After Orthodontic Treatment

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Before (T0) and 24 weeks after (T1) surgery, dental models were fabricated by taking impressions of the mandibular dentition using prefabricated individual trays made from a self-cured acrylic resin (Formatray®; Kerr Manufacturing, Romulus, MI, USA) and polyvinylsiloxane impression materials (Aquasil Ultra LV® and Aquasil Ultra XLV®; Dentsply DeTrey, Konstanz, Germany), and dental stone (GC Fujirock® type 4; GC Corporation, Tokyo, Japan) was used to prepare dental casts. The two dental casts obtained at T0 and T1 were scanned (Imetric 3D, Courgenay, Switzerland) and superimposed on the basis of the positions of the posterior teeth that were not included in the orthodontic treatment (Geomagic Control software; 3D Systems, Rock Hill, SC, USA). The distances between the incisal tips at T0 and T1 were measured on the superimposed image (Figure 3A). The measurements were performed for I1 and I3 on both sides to assess the amount of anterior movement. The distances between the incisal tips of I3 and the adjacent canine on each side were also measured at each time point.
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