Urbano Santana-Penín | University of Santiago de Compostela (original) (raw)

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Papers by Urbano Santana-Penín

Research paper thumbnail of Utilidad de los portales audiovisuales en formación autodirigida sobre contaminación cruzada en odontología

XV Foro internacional sobre la evaluación de la calidad de la investigación y de la educación superior: (FECIES), 2018, 2018, ISBN 978-84-09-02098-0, págs. 589-595, 2018

Research paper thumbnail of Mandibular movement during speech of two related Latin languages

Cranio-the Journal of Craniomandibular Practice, Jan 2, 2016

Research paper thumbnail of Temporomandibular Disorders: The Habitual Chewing Side Syndrome

Research paper thumbnail of An esthetically attractive twin-flex clasp for removable partial dentures

Journal of Prosthetic Dentistry, Sep 1, 1998

Research paper thumbnail of Commentary on Manfredini et al

Pain Medicine, Dec 19, 2013

Research paper thumbnail of Biomechanical Evaluation of Neuro-occlusal Rehabilitation for Occlusal Imbalance Correction in Children with Facial Asymmetry

Jornada de jóvenes investigadores del I3A, May 25, 2018

Research paper thumbnail of Simple method for articulator mounting of mandibular diagnostic casts

Journal of Prosthetic Dentistry, Nov 1, 1998

Research paper thumbnail of The occlusal plane indicator: A new device for determining the inclination of the occlusal plane

Journal of Prosthetic Dentistry, Sep 1, 1998

Research paper thumbnail of An accurate method for occlusal registration and altered-cast impression for removable partial dentures during the same visit as the framework try-in

Journal of Prosthetic Dentistry, Nov 1, 1998

Research paper thumbnail of A porous fibrous hyperelastic damage model for human periodontal ligament: Application of a microcomputerized tomography finite element model

International Journal for Numerical Methods in Biomedical Engineering, Feb 6, 2019

Research paper thumbnail of Electromyographic activity in patients with temporomandibular disorders

Journal of Oral Rehabilitation, Nov 1, 2000

Evaluation of masticatory muscle activity by surface electromyography (EMG) is a valuable tool fo... more Evaluation of masticatory muscle activity by surface electromyography (EMG) is a valuable tool for diagnosing dysfunction of the masticatory apparatus. However, controversy exists with regard to the usefulness of the EMG for patients with temporomandibular disorders (TMD). Forty patients with TMD were subjected to surface EMG of the masticatory muscles. These patients had consulted because of temporomandibular pain and clicks. In most cases (75%), the symptoms affected the patient's left side. Overall mean resting activity was 2.52 microV+/-1.25 microV (s.d.), which is slightly higher than in comparable healthy subjects (1.92+/-1.20 microV). Mean resting activity was highest in the anterior digastric muscle (3.49 microV) on the left side. Overall mean activity during clenching was 66.77+/-35.22 microV, which is about half that observed in healthy subjects (110.30+/-82.97 microV). During leftward movement of the jaw, activity was on average highest in the left digastric, while during rightward movement, activity was on average highest in the right anterior temporal (AT). Our results thus indicate that patients with temporomandibular joint (TMJ) disorder show: (1) a slight increase in basal tone; (2) a significantly reduced capacity for clenching; and (3) an apparently paradoxical inhibition of the dysfunctional-side AT during movement of the mandible towards that side.

Research paper thumbnail of Remodeling dental anatomy vs sham therapy for chronic temporomandibular disorders. A placebo-controlled randomized clinical trial

Annals of Anatomy - Anatomischer Anzeiger

Research paper thumbnail of Perno-muñón colado. Parte II

RCOE: Revista del Ilustre Consejo General de Colegios de Odontólogos y Estomatólogos de España, 2000

Research paper thumbnail of Finite element model of the nonlinear behaviour of the human periodontal ligament

It is well known that the periodontal ligament (PDL) plays a key role in transferring loads from ... more It is well known that the periodontal ligament (PDL) plays a key role in transferring loads from the teeth to the alveolar bone, and it is becoming increasingly difficult to ignore that PDL performs greatly in tooth movements [1]. Some authors stress that the use of 3D geometry is mandatory; and plane models should never be used to simulate the tooth/bone system under load [2]. Although, more recent studies [3] proposed porohyperelastic models, the material properties of PDL are still not clarified [2][3]. The aim of this study is to validate and evaluate a finite element (FE) model based on the real geometry of a specimen extracted from a fresh human cadaver obtained by computer micro-tomography (µCT). For that purpose, the PDL behaviour was defined as a porous hyperelastic anisotropic material.

Research paper thumbnail of Diagnosis of TMJ disorders using parametric numerical models obtained by active shape model of orthopantomography

Some temporomandibular joint (TMJ) disorders start during childhood. An early treatment can avoid... more Some temporomandibular joint (TMJ) disorders start during childhood. An early treatment can avoid later surgical operation. However, it is difficult to design an early treatment because of the radiation that computed tomography scanner causes to children [1]. Also, the orthopantomography (OPG) is a planar image that causes difficulty to study the TMJ [2]. Thus, the purpose of this study is to design a computational tool able to represent the stresses at the TMJ by using an OPG image. For that purpose, a parametric finite element (FE) model of the human TMJ using active shape models (ASM) [3] obtained by OPGs was developed.

Research paper thumbnail of Computational analysis of craniomandibular tissues for the correction of mandibular asymmetries in childhood

The craniofacial asymmetry, which is defined as the size difference between the left and right he... more The craniofacial asymmetry, which is defined as the size difference between the left and right hemi-faces, is a consequence of a different growth of the mandibular ramus. This difference may be due to the unilateral chewing, to occlusal interferences, or to muscle-bone dynamic alterations. All of them with great biomechanical importance. This morphological difference is aggravated during growth, since it not only causes an anomalous esthetic effect but, furthermore induces limitations on the chewing functional habits, temporomandibular disorders (TMD), or disorders of the ear, among others. Despite it has been demonstrated the relation between the malocclusion and the skeleton disproportion [1], and it has been simulated numerically the chewing biomechanics [2], currently the correction of facial abnormalities on children is made from a clinical point of view, exclusively. There are not computational simulations that consider the real morphology of the mandibular asymmetry, or the f...

Research paper thumbnail of Cambios dimensionales en la polimerización de las resinas

Research paper thumbnail of Biomechanical Evaluation of Neuro-occlusal Rehabilitation for Occlusal Imbalance Correction in Children with Facial Asymmetry

Jornada de Jóvenes Investigadores del I3A, 2018

Contemporary eating habits may cause malformations in children jaw, that are difficult to evaluat... more Contemporary eating habits may cause malformations in children jaw, that are difficult to evaluate and treat clinically. In this work, a computational methodology for the diagnosis and the treatment of this pathology is proposed. It combines porous-fibrous material models, medical devices and computational models of patients with facial asymmetries from the perspective of neuro-occlusal rehabilitation.

Research paper thumbnail of Approach towards the porous fibrous structure of the periodontal ligament using micro-computerized tomography and finite element analysis

Journal of the Mechanical Behavior of Biomedical Materials, 2018

Research paper thumbnail of Minimally invasive complete rehabilitation of severe wear: one year follow up

Journal of Clinical and Experimental Dentistry, 2017

Research paper thumbnail of Utilidad de los portales audiovisuales en formación autodirigida sobre contaminación cruzada en odontología

XV Foro internacional sobre la evaluación de la calidad de la investigación y de la educación superior: (FECIES), 2018, 2018, ISBN 978-84-09-02098-0, págs. 589-595, 2018

Research paper thumbnail of Mandibular movement during speech of two related Latin languages

Cranio-the Journal of Craniomandibular Practice, Jan 2, 2016

Research paper thumbnail of Temporomandibular Disorders: The Habitual Chewing Side Syndrome

Research paper thumbnail of An esthetically attractive twin-flex clasp for removable partial dentures

Journal of Prosthetic Dentistry, Sep 1, 1998

Research paper thumbnail of Commentary on Manfredini et al

Pain Medicine, Dec 19, 2013

Research paper thumbnail of Biomechanical Evaluation of Neuro-occlusal Rehabilitation for Occlusal Imbalance Correction in Children with Facial Asymmetry

Jornada de jóvenes investigadores del I3A, May 25, 2018

Research paper thumbnail of Simple method for articulator mounting of mandibular diagnostic casts

Journal of Prosthetic Dentistry, Nov 1, 1998

Research paper thumbnail of The occlusal plane indicator: A new device for determining the inclination of the occlusal plane

Journal of Prosthetic Dentistry, Sep 1, 1998

Research paper thumbnail of An accurate method for occlusal registration and altered-cast impression for removable partial dentures during the same visit as the framework try-in

Journal of Prosthetic Dentistry, Nov 1, 1998

Research paper thumbnail of A porous fibrous hyperelastic damage model for human periodontal ligament: Application of a microcomputerized tomography finite element model

International Journal for Numerical Methods in Biomedical Engineering, Feb 6, 2019

Research paper thumbnail of Electromyographic activity in patients with temporomandibular disorders

Journal of Oral Rehabilitation, Nov 1, 2000

Evaluation of masticatory muscle activity by surface electromyography (EMG) is a valuable tool fo... more Evaluation of masticatory muscle activity by surface electromyography (EMG) is a valuable tool for diagnosing dysfunction of the masticatory apparatus. However, controversy exists with regard to the usefulness of the EMG for patients with temporomandibular disorders (TMD). Forty patients with TMD were subjected to surface EMG of the masticatory muscles. These patients had consulted because of temporomandibular pain and clicks. In most cases (75%), the symptoms affected the patient's left side. Overall mean resting activity was 2.52 microV+/-1.25 microV (s.d.), which is slightly higher than in comparable healthy subjects (1.92+/-1.20 microV). Mean resting activity was highest in the anterior digastric muscle (3.49 microV) on the left side. Overall mean activity during clenching was 66.77+/-35.22 microV, which is about half that observed in healthy subjects (110.30+/-82.97 microV). During leftward movement of the jaw, activity was on average highest in the left digastric, while during rightward movement, activity was on average highest in the right anterior temporal (AT). Our results thus indicate that patients with temporomandibular joint (TMJ) disorder show: (1) a slight increase in basal tone; (2) a significantly reduced capacity for clenching; and (3) an apparently paradoxical inhibition of the dysfunctional-side AT during movement of the mandible towards that side.

Research paper thumbnail of Remodeling dental anatomy vs sham therapy for chronic temporomandibular disorders. A placebo-controlled randomized clinical trial

Annals of Anatomy - Anatomischer Anzeiger

Research paper thumbnail of Perno-muñón colado. Parte II

RCOE: Revista del Ilustre Consejo General de Colegios de Odontólogos y Estomatólogos de España, 2000

Research paper thumbnail of Finite element model of the nonlinear behaviour of the human periodontal ligament

It is well known that the periodontal ligament (PDL) plays a key role in transferring loads from ... more It is well known that the periodontal ligament (PDL) plays a key role in transferring loads from the teeth to the alveolar bone, and it is becoming increasingly difficult to ignore that PDL performs greatly in tooth movements [1]. Some authors stress that the use of 3D geometry is mandatory; and plane models should never be used to simulate the tooth/bone system under load [2]. Although, more recent studies [3] proposed porohyperelastic models, the material properties of PDL are still not clarified [2][3]. The aim of this study is to validate and evaluate a finite element (FE) model based on the real geometry of a specimen extracted from a fresh human cadaver obtained by computer micro-tomography (µCT). For that purpose, the PDL behaviour was defined as a porous hyperelastic anisotropic material.

Research paper thumbnail of Diagnosis of TMJ disorders using parametric numerical models obtained by active shape model of orthopantomography

Some temporomandibular joint (TMJ) disorders start during childhood. An early treatment can avoid... more Some temporomandibular joint (TMJ) disorders start during childhood. An early treatment can avoid later surgical operation. However, it is difficult to design an early treatment because of the radiation that computed tomography scanner causes to children [1]. Also, the orthopantomography (OPG) is a planar image that causes difficulty to study the TMJ [2]. Thus, the purpose of this study is to design a computational tool able to represent the stresses at the TMJ by using an OPG image. For that purpose, a parametric finite element (FE) model of the human TMJ using active shape models (ASM) [3] obtained by OPGs was developed.

Research paper thumbnail of Computational analysis of craniomandibular tissues for the correction of mandibular asymmetries in childhood

The craniofacial asymmetry, which is defined as the size difference between the left and right he... more The craniofacial asymmetry, which is defined as the size difference between the left and right hemi-faces, is a consequence of a different growth of the mandibular ramus. This difference may be due to the unilateral chewing, to occlusal interferences, or to muscle-bone dynamic alterations. All of them with great biomechanical importance. This morphological difference is aggravated during growth, since it not only causes an anomalous esthetic effect but, furthermore induces limitations on the chewing functional habits, temporomandibular disorders (TMD), or disorders of the ear, among others. Despite it has been demonstrated the relation between the malocclusion and the skeleton disproportion [1], and it has been simulated numerically the chewing biomechanics [2], currently the correction of facial abnormalities on children is made from a clinical point of view, exclusively. There are not computational simulations that consider the real morphology of the mandibular asymmetry, or the f...

Research paper thumbnail of Cambios dimensionales en la polimerización de las resinas

Research paper thumbnail of Biomechanical Evaluation of Neuro-occlusal Rehabilitation for Occlusal Imbalance Correction in Children with Facial Asymmetry

Jornada de Jóvenes Investigadores del I3A, 2018

Contemporary eating habits may cause malformations in children jaw, that are difficult to evaluat... more Contemporary eating habits may cause malformations in children jaw, that are difficult to evaluate and treat clinically. In this work, a computational methodology for the diagnosis and the treatment of this pathology is proposed. It combines porous-fibrous material models, medical devices and computational models of patients with facial asymmetries from the perspective of neuro-occlusal rehabilitation.

Research paper thumbnail of Approach towards the porous fibrous structure of the periodontal ligament using micro-computerized tomography and finite element analysis

Journal of the Mechanical Behavior of Biomedical Materials, 2018

Research paper thumbnail of Minimally invasive complete rehabilitation of severe wear: one year follow up

Journal of Clinical and Experimental Dentistry, 2017