Morphological, densitometric and mechanical properties of mandible in 5-month-old Polish Merino sheep

Szabelska, Anna; Tatara, Marcin R.; Krupski, Witold

doi:10.1186/s12917-016-0921-3

Cited by 14 publications

(10 citation statements)

References 28 publications

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“…The measurements of MvBMD and Bvol were performed for the whole mandible and the results obtained reflect MvBMD measured for all the anatomical structures including teeth. Geometrical properties such as cross-sectional area (A), second moment of inertia (Ix), mean relative wall thickness (MRWT) and cortical index (CI) of mandible were determined on the basis of measurements of horizontal and vertical diameters (both external and internal) of the mid-diastemal cross-sections of the bone (the same measuring scans which were used for densitometric evaluation) obtained from computed tomography multiplanar reconstructions 13) .…”

Section: Quantitative Computed Tomography (Qct) Of Teeth and Mandiblementioning

confidence: 99%

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Interrelationships between Bone Metabolism Markers and Deciduous Teeth and Mandible Properties in Polish Merino Sheep

Szabelska

Tatara

Krupski

2017

J. Hard Tissue Biology.

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Considering existing similarities of bones and teeth formation and following mineralization, the aim of the study was to evaluate biochemical bone metabolism markers in growing Polish Merino sheep and their relationships with morphometric, densitometric and mechanical properties of deciduous mandibular teeth and mandible. Blood samples were collected from 28-day and 150-day-old sheep to determine serum concentrations of insulin-like growth factor I (IGF-I), bone-specifi c alkaline phosphatase (BAP), osteocalcin, C-terminal propeptide of type I procollagen (CICP), C-terminal telopeptides of type I collagen (CTX-I) and C-terminal telopeptides of type II collagen (CTX-II). Bone and tooth samples were collected from 150-day-old sheep and were evaluated morphologically, densitometrically and mechanically. Serum concentrations of BAP, OC and CTX-II were significantly lower in 150-day-old sheep when compared to the measurements performed 4 months earlier (P < 0.01). Negative correlation between CTX-I and OC concentrations in 150-day-old sheep was stated (P < 0.05). Majority of the significant correlations between tooth properties and serum biochemical bone metabolism indices were found in 28-day-old sheep indicating more intensive odontogenesis process of deciduous teeth than 4 months later. Positive correlations between morphological and densitometric properties of mandible and serum CICP dominated in 28-day-old sheep, while 4 months later CTX-II was the only one marker positively correlated with morphological, densitometric and mechanical properties of mandible (P < 0.05). Evaluation of bone and cartilage metabolism markers in serum may be utilized in further studies on regulation of dental and skeletal metabolism with environmental, physiological, pharmacological, nutritional and toxicological factors infl uencing mineralized tissue metabolism.

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Section: Quantitative Computed Tomography (Qct) Of Teeth and Mandiblementioning

confidence: 99%

“…The measuring head loaded bone sample (left and right halves) on the medial surface at 50% of its length with the constant speed of 50 mm/ min. The distance between bone supports was set at 40% of mandibular halve length 13) .…”

Section: Mechanical Analyses Of Teeth and Mandiblementioning

confidence: 99%

Interrelationships between Bone Metabolism Markers and Deciduous Teeth and Mandible Properties in Polish Merino Sheep

Szabelska

Tatara

Krupski

2017

J. Hard Tissue Biology.

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“…In mammals, the mandible is mostly made of cortical bone and is physiologically equipped with teeth. The anatomy of the mandible is very important for both phylogenetic and biomechanical analyses (Szabelska et al, 2017; Yilmaz & Demircioğlu, 2019).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of skull and mandible morphometric measurements and three‐dimensional modelling of computed tomographic images of porcupine (Hystrix cristata)

Baygeldi

Güzel

Kanmaz

et al. 2022

Anat Histol Embryol

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Although there have been morphological and morphometric studies on the porcupine skull, three‐dimensional modelling of the skull is performed for the first time with the present study. In this study, it was aimed to model the skull and mandible of Hystrix cristata in 3D to reveal its morphometric values and the differences between the sexes. Morphometric analyses were performed on a total of eight (four male and four female) adult porcupine skulls and mandibles. Skulls and mandibles of porcupines were scanned usinf a 64‐detector MDCT (General Electric Revolution) device at 80 kV, 200 MA, 639 mGY and 0.625 mm slice thickness. Skull and mandible reconstructions were made with the help of MIMICS 20.1 (Materialize) software program and the surface area and volume values of the skull and mandible were calculated. Statistical analyses were carried out using SPSS 22.0 software. The longest measurement in the skulls, based on the metric measurement points, was the total length (TL), and it was measured as 135.4750 ± 0.54976 mm in males and 134.4725 ± 0.86681 mm in females (p < 0.5). The highest value was the foramen magnum index (p < 0.5), and the lowest value the was skull index (p < 0.1). While the total volume ratio of the mandibles was 29901.64 mm3 in males, it was 27296.20 mm3 in females (p > 0.5). Statistical differences in the morphometric values of skulls and mandibles of male and female porcupines were demonstrated for the first time using CT and three‐dimensional modelling software.

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“…Qualitative and quantitative changes in anatomical structure and physiological function are the basis of disease research, so accurate descriptions of baseline properties are essential. Numerous reports have examined normal parameters for blood, heart, brain, liver, kidney, and other large organs among common experimental model animals [1][2][3][4][5], but few have examined eye structure and function in different models for ophthalmology research. A complete set of anatomic and physiological parameters for speci c experimental animals will be invaluable for choosing the optimal model, preparation technique, and measurement technology.…”

Section: Introductionmentioning

confidence: 99%

Fundus Photography, Fundus Fluorescein Angiography, and Optical Coherence Tomography of Healthy Cynomolgus Monkey, New Zealand Rabbit, Sprague Dawley Rat, and BALB/c Mouse Retina

Xian

Zhao²,

Peng³

et al. 2020

Preprint

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Background A variety of experimental animal models are used in basic ophthalmological research to elucidate physiological mechanisms of vision and disease pathogenesis. The choice of animal model is based on the measurability of specific parameters or structures, the applicability of clinical measurement technologies, and the similarity to human eye function. Studies of eye pathology usually compare optical parameters between a healthy and altered state, so accurate baseline assessments are critical, but few reports have comprehensively examined the normal anatomical structures and physiological functions in these models. Methods Three cynomolgus monkeys, six New Zealand rabbits, ten Sprague Dawley (SD) rats, and BALB/c mice were examined by fundus photography (FP), fundus fluorescein angiography (FFA), and optical coherence tomography (OCT). Results Most retinal structures of cynomolgus monkey were anatomically similar to the corresponding human structures as revealed by FP, FFA, and OCT. New Zealand rabbits have large eyeballs, but they have large optic disc and myelinated retinal nerve fibers in their retina, and the growth pattern of retinal vessels were also different to the human retina. Unlike monkeys and rabbits, the retinal vessels of SD rats and BLAB/c mice were widely distributed and clear. And the OCT preformance of them were similar with human beings. Conclusion Monkey is a good model to study changes in retinal structure associated with fundus disease, rabbits are not suitable for studies on retinal vessel diseases and optic nerve diseases, and rats and mice are good models for retinal vascular diseases. These measures will help guide the choice of model and measurement technology and reduce the number of experimental animals required.

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Morphological, densitometric and mechanical properties of mandible in 5-month-old Polish Merino sheep

Cited by 14 publications

References 28 publications

Interrelationships between Bone Metabolism Markers and Deciduous Teeth and Mandible Properties in Polish Merino Sheep

Interrelationships between Bone Metabolism Markers and Deciduous Teeth and Mandible Properties in Polish Merino Sheep

Evaluation of skull and mandible morphometric measurements and three‐dimensional modelling of computed tomographic images of porcupine (Hystrix cristata)

Fundus Photography, Fundus Fluorescein Angiography, and Optical Coherence Tomography of Healthy Cynomolgus Monkey, New Zealand Rabbit, Sprague Dawley Rat, and BALB/c Mouse Retina

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