A Study of Repeatability And Reproducibility of Amperometric Sensor Based on BOBzBT2 Pentamer for Creatinine Detection

This study investigates the reliability and precision of anthropometric measurements collected from 3D images and acquired under different conditions of head rotation. Various sources of error were examined, and the equivalence between craniofacial data generated from alternative head positions was assessed. 3D captures of a mannequin head were obtained with a stereophotogrammetric system (Face Shape 3D MaxiLine). Image acquisition was performed with no rotations and with various pitch, roll, and yaw angulations. On 3D images, 14 linear distances were measured. Various indices were used to quantify error magnitude, among them the acquisition error, the mean and the maximum intra- and inter-operator measurement error, repeatability and reproducibility error, the standard deviation, and the standard error of errors. Two one-sided tests (TOST) were performed to assess the equivalence between measurements recorded in different head angulations. The maximum intra-operator error was very low (0.336 mm), closely followed by the acquisition error (0.496 mm). The maximum inter-operator error was 0.532 mm, and the highest degree of error was found in reproducibility (0.890 mm). Anthropometric measurements from alternative acquisition conditions resulted in significantly equivalent TOST, with the exception of Zygion (l)–Tragion (l) and Cheek (l)–Tragion (l) distances measured with pitch angulation compared to no rotation position. Face Shape 3D Maxiline has sufficient accuracy for orthodontic and surgical use. Precision was not altered by head orientation, making the acquisition simpler and not constrained to a critical precision as in 2D photographs.

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Amperometric sensor based on ZIF/g-C3N4/RGO heterojunction nanocomposite for hydrazine detection

Microchimica Acta ◽

10.1007/s00604-021-04711-6 ◽

2021 ◽

Vol 188 (2) ◽

Author(s):

Cuiyuan Liang ◽

Huiming Lin ◽

Wei Guo ◽

Xing Lu ◽

Dexin Yu ◽

...

Keyword(s):

Amperometric Sensor

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Influence of solid electrolyte upon the repeatability and reproducibility of all-solid-state ion-selective electrodes with inorganic insertion material paste

Electrochimica Acta ◽

10.1016/j.electacta.2021.137896 ◽

2021 ◽

Vol 373 ◽

pp. 137896

Author(s):

Junko Kojima ◽

Kenichi Uchiyama ◽

Yumi Yoshida

Keyword(s):

Solid State ◽

Solid Electrolyte ◽

Ion Selective Electrodes ◽

Repeatability And Reproducibility

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A Repeatable and Reproducible Digital Method to Quantify the Cement Excess and Enamel Loss after Debonding Lingual Multibracket Appliance Therapy

Applied Sciences ◽

10.3390/app11031295 ◽

2021 ◽

Vol 11 (3) ◽

pp. 1295

Author(s):

Alba Belanche Monterde ◽

Alberto Albaladejo Martínez ◽

Alfonso Alvarado Lorenzo ◽

Adrián Curto ◽

Jorge Alonso Pérez-Barquero ◽

...

Keyword(s):

Measurement Technique ◽

Measurement Method ◽

Dental Arch ◽

Micro Computed Tomography ◽

Morphometric Measurement ◽

Before And After ◽

Repeatability And Reproducibility ◽

Lingual Brackets ◽

Multibracket Appliance ◽

Area And Volume

The aim of the present study is to present a repeatable, reproductible, and accurate morphometric measurement method for measuring and quantifying the area and volume of cement that remains after fixed lingual multibracket appliance debonding, enamel loss after fixed lingual multibracket appliance debonding, and the volume of cement used to adhere fixed lingual multibracket appliances. Ten conventional lingual brackets were cemented in 10 extracted teeth embedded into an epoxy resin model simulating a dental arch. This model was scanned before and after bonding the lingual brackets, after debonding, and after polishing the surfaces. We also performed a Micro-Computed Tomography scan of the lingual brackets used. Afterward, the standard tessellation language (STL) digital file was aligned, each tooth was segmented individually, and the file was re-aligned using engineer morphometry software. Inter-operator and intra-operator comparative analyses were performed using the ANOVA test, and the repeatability and reproducibility of the morphometric measurement technique were analyzed using Gage R&R statistical analysis. Repeatability showed 0.07% and 0.16% variability associated with the area and volume measures, respectively, while reproducibility showed 0.00% variability associated with the area and volume measures, respectively. In conclusion, the morphometric measurement technique is a repeatable, reproductible, and accurate morphometric measurement method for quantifying the area and volume of cement that remains after fixed lingual multibracket appliance debonding, enamel loss after fixed lingual multibracket appliance debonding, and the volume of cement used to adhere fixed lingual multibracket appliances.

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