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Papers by Ariel Adriano Reyes

Research paper thumbnail of Smile Arc Esthetics in Middle-Aged Man from the Layperson’s Perspective Via Eye-Tracking

Pesquisa Brasileira em Odontopediatria e Clínica Integrada

Objective: To evaluate the perceptions of smile esthetics associated with variations in the verti... more Objective: To evaluate the perceptions of smile esthetics associated with variations in the vertical plane of the maxillary incisors in the smile arc using eye-tracking software. Material and Methods: An image of a 59-year-old Caucasian male model was adapted and edited to make three changes in the vertical plane, simulating a convex, straight, and reverse smile arc. Four areas of interest were inserted at the right and left eyes, nose, and mouth. Forty laypeople raters between 18 and 45 years of age participated of the study. Eye-tribe hardware and Ogama software were used to perform eye-tracking. Attractiveness and ageperception questions were also incorporated into the study. ANOVA test and Pearson's correlation coefficient, at p < 0.05. Results: The most observed AOI in images with convex, straight, and reverse smiles, as assessed using heatmaps and point maps, was the mouth, followed by the right eye. A significant difference for the eye (p=0.02) was found when comparing convex and reverse smiles, whereas a significant difference for the mouth was observed between the straight and reverse smiles (p=0.03). Conclusion: Convex and straight smile arcs were associated with equal levels of attractiveness; the reverse smile was less attractive. No significant difference was noticed regarding age perception and the smile arcs. However, the reverse smile recorded a more complete fixation time.

Research paper thumbnail of Changes in the mandibular arch after rapid maxillary expansion in children: A three-dimensional analysis using digital models

European Journal of General Dentistry, 2018

Objective: This retrospective study quantitatively evaluated and compared the change in distance ... more Objective: This retrospective study quantitatively evaluated and compared the change in distance between mandibular first molars before and after rapid maxillary expansion (RME) using digital models. Materials and Methods: Twenty-seven (n = 27) plaster models (16 females and 11 males, between 6 and 9 years old) from patients treated at the Interceptive Orthodontic Clinic of the Pontifical Catholic University of Paraná (PUCPR, Curitiba, Brazil) were used. The initial (T1) and final (1 year after, T2) dental casts were scanned. The distances between the mandibular first molars were measured and compared using Geomagic Foundation software (Rock Hill, SC, USA). The central fossa of each mandibular molar was used as the reference point. The mandibular arch perimeter was measured using Orthoviewer (3Shape, Copenhagen, Denmark). Results: The intermolar width increased by 0.23 mm and by 0.75 mm in the arch perimeter. In two patients the intermolar width increased more than 2 mm, and in five...

Research paper thumbnail of Simulation of the clinical procedure by digital intraoral palpation of the greatest prominence of the Infrazygomatic crest for mini-implants insertion

Research, Society and Development

The objective of this cross-sectional retrospective study was to simulate using cone-beam compute... more The objective of this cross-sectional retrospective study was to simulate using cone-beam computed tomography (CBCT) in adults, the clinical procedure performed by intraoral digital palpation of the greatest prominence (GP) of the Infrazygomatic crest (IZC) for mini-implants (MIs) insertion. CBCT images of 34 adults (14 men, 20 women), aged 18.0 to 57.7 years (mean, 32.2 years) were selected. On 3D reconstruction, the GP of the IZC region was determined using the anatomical morphology, and its anteroposterior position on the selected axial slice was evaluated relative to the dental reference located between the maxillary first and second molars (U6–U7). On the selected coronal slice, two reference lines were established to evaluate the insertion angle and insertion depth (IZC thickness) for MIs. The same procedure was performed on slices with intervals of 1 mm mesially as well as distally up to reach 4 mm. The right and left sides were measured. In relation to U6-U7, the GP of the I...

Research paper thumbnail of Distalization rate of maxillary canines in an alveolus filled with leukocyte-platelet–rich fibrin in adults: A randomized controlled clinical split-mouth trial

American Journal of Orthodontics and Dentofacial Orthopedics

Research paper thumbnail of Stress Distribution Evaluation of the Periodontal Ligament in the Maxillary Canine for Retraction by Different Alveolar Corticotomy Techniques: A Three-dimensional Finite Element Analysis

The Journal of Contemporary Dental Practice, 2016

Aim: By using the finite element method (FEM), this study aimed to evaluate the effect of differe... more Aim: By using the finite element method (FEM), this study aimed to evaluate the effect of different corticotomy formats on the distribution and magnitude of stress on the periodontal ligament (PDL) during retraction of the maxillary canine. Materials and methods: A geometric model of the left hemi-jaw was created from computed tomography scan images of a dry human skull and loads were administered during distalization movement of the canine. Three trials were performed: (1) without corticotomy, (2) box-shaped corticotomy and perforations in the cortical bone of the canine (CVC) and (3) CVC and circularshaped corticotomy in the cortical bone of the edentulous space of the first premolar. Results: There was no difference in stress distribution among the different corticotomy formats. Conclusion: Different corticotomy formats used to accelerate orthodontic tooth movement did not affect stress distribution in the PDL during canine retraction.

Research paper thumbnail of Propulsores mandibulares para la corrección de maloclusiones de Clase II-1 subdivisión de Angle

Research paper thumbnail of Combined Periodontal, Orthodontic, and Prosthetic Treatment in an Adult Patient

Case Reports in Dentistry, 2015

A 41-year-old man had a significant loss of bone and supporting tissues with pathologic migration... more A 41-year-old man had a significant loss of bone and supporting tissues with pathologic migration of several teeth and several missing teeth. He was treated with an interdisciplinary therapeutic protocol that included nonsurgical periodontal therapy based on strict control of supragingival plaque, subgingival periodontal therapy, orthodontic and endodontic treatment, and replacement of restorations. The orthodontic therapy was performed in a severely reduced bone support and the presence of pathological tooth migration after periodontal disease control. The interdisciplinary treatment protocol was the key to achieve a significant improvement in his facial and dental esthetics, masticatory function, and quality of life.

Research paper thumbnail of Therapeutic approach to Class II, Division 1 malocclusion with maxillary functional orthopedics

Dental Press Journal of Orthodontics, 2015

INTRODUCTION: Interceptive treatment of Class II, Division 1 malocclusion is a challenge orthodon... more INTRODUCTION: Interceptive treatment of Class II, Division 1 malocclusion is a challenge orthodontists commonly face due to the different growth patterns they come across and the different treatment strategies they have available.OBJECTIVE: To report five cases of interceptive orthodontics performed with the aid of Klammt's elastic open activator (KEOA) to treat Class II, Division 1 malocclusion.METHODS: Treatment comprehends one or two phases; and the use of functional orthopedic appliances, whenever properly recommended, is able to minimize dentoskeletal discrepancies with consequent improvement in facial esthetics during the first stage of mixed dentition. The triad of diagnosis, correct appliance manufacture and patient's compliance is imperative to allow KEOA to contribute to Class II malocclusion treatment.RESULTS: Cases reported herein showed significant improvement in skeletal, dental and profile aspects, as evinced by cephalometric analysis and clinical photographs ...

Research paper thumbnail of Diagnosis and Treatment of Pseudo-Class III Malocclusion

Case Reports in Dentistry, 2014

Pseudo-Class III malocclusion is characterized by the presence of an anterior crossbite due to a ... more Pseudo-Class III malocclusion is characterized by the presence of an anterior crossbite due to a forward functional displacement of the mandible; in most cases, the maxillary incisors present some degree of retroclination, and the mandibular incisors are proclined. Various types of appliances have been described in the literature for the early treatment of pseudo-Class III malocclusion. The objectives of this paper are to demonstrate the importance of making the differential diagnosis between a skeletal and a pseudo-Class III malocclusion and to describe the correction of an anterior crossbite. The association of maxillary expansion and a 2 × 4 appliance can successfully be used to correct anterior crossbites.

Research paper thumbnail of Four impacted canines in an adult patient: A challenge in orthodontics

Indian Journal of Dental Research, 2014

This case report illustrates the management of four impacted canines in an adult patient associat... more This case report illustrates the management of four impacted canines in an adult patient associated with prolonged retention of the four deciduous teeth. The treatment plan was formulated to extract the lower deciduous teeth, application of the forced eruption with the permanent canines, and extract the upper permanent canines and maintenance of the maxillary deciduous canines. No reshaping of the maxillary deciduous teeth was performed because the patient was satisfied with the results.

Research paper thumbnail of Four impacted canines in an adult patient: A challenge in orthodontics

Indian Journal of Dental Research, 2014

This case report illustrates the management of four impacted canines in an adult patient associat... more This case report illustrates the management of four impacted canines in an adult patient associated with prolonged retention of the four deciduous teeth. The treatment plan was formulated to extract the lower deciduous teeth, application of the forced eruption with the permanent canines, and extract the upper permanent canines and maintenance of the maxillary deciduous canines. No reshaping of the maxillary deciduous teeth was performed because the patient was satisfied with the results.

Research paper thumbnail of Four impacted canines in an adult patient: A challenge in orthodontics

Indian Journal of Dental Research, 2014

This case report illustrates the management of four impacted canines in an adult patient associat... more This case report illustrates the management of four impacted canines in an adult patient associated with prolonged retention of the four deciduous teeth. The treatment plan was formulated to extract the lower deciduous teeth, application of the forced eruption with the permanent canines, and extract the upper permanent canines and maintenance of the maxillary deciduous canines. No reshaping of the maxillary deciduous teeth was performed because the patient was satisfied with the results.

Research paper thumbnail of Smile Arc Esthetics in Middle-Aged Man from the Layperson’s Perspective Via Eye-Tracking

Pesquisa Brasileira em Odontopediatria e Clínica Integrada

Objective: To evaluate the perceptions of smile esthetics associated with variations in the verti... more Objective: To evaluate the perceptions of smile esthetics associated with variations in the vertical plane of the maxillary incisors in the smile arc using eye-tracking software. Material and Methods: An image of a 59-year-old Caucasian male model was adapted and edited to make three changes in the vertical plane, simulating a convex, straight, and reverse smile arc. Four areas of interest were inserted at the right and left eyes, nose, and mouth. Forty laypeople raters between 18 and 45 years of age participated of the study. Eye-tribe hardware and Ogama software were used to perform eye-tracking. Attractiveness and ageperception questions were also incorporated into the study. ANOVA test and Pearson's correlation coefficient, at p < 0.05. Results: The most observed AOI in images with convex, straight, and reverse smiles, as assessed using heatmaps and point maps, was the mouth, followed by the right eye. A significant difference for the eye (p=0.02) was found when comparing convex and reverse smiles, whereas a significant difference for the mouth was observed between the straight and reverse smiles (p=0.03). Conclusion: Convex and straight smile arcs were associated with equal levels of attractiveness; the reverse smile was less attractive. No significant difference was noticed regarding age perception and the smile arcs. However, the reverse smile recorded a more complete fixation time.

Research paper thumbnail of Changes in the mandibular arch after rapid maxillary expansion in children: A three-dimensional analysis using digital models

European Journal of General Dentistry, 2018

Objective: This retrospective study quantitatively evaluated and compared the change in distance ... more Objective: This retrospective study quantitatively evaluated and compared the change in distance between mandibular first molars before and after rapid maxillary expansion (RME) using digital models. Materials and Methods: Twenty-seven (n = 27) plaster models (16 females and 11 males, between 6 and 9 years old) from patients treated at the Interceptive Orthodontic Clinic of the Pontifical Catholic University of Paraná (PUCPR, Curitiba, Brazil) were used. The initial (T1) and final (1 year after, T2) dental casts were scanned. The distances between the mandibular first molars were measured and compared using Geomagic Foundation software (Rock Hill, SC, USA). The central fossa of each mandibular molar was used as the reference point. The mandibular arch perimeter was measured using Orthoviewer (3Shape, Copenhagen, Denmark). Results: The intermolar width increased by 0.23 mm and by 0.75 mm in the arch perimeter. In two patients the intermolar width increased more than 2 mm, and in five...

Research paper thumbnail of Simulation of the clinical procedure by digital intraoral palpation of the greatest prominence of the Infrazygomatic crest for mini-implants insertion

Research, Society and Development

The objective of this cross-sectional retrospective study was to simulate using cone-beam compute... more The objective of this cross-sectional retrospective study was to simulate using cone-beam computed tomography (CBCT) in adults, the clinical procedure performed by intraoral digital palpation of the greatest prominence (GP) of the Infrazygomatic crest (IZC) for mini-implants (MIs) insertion. CBCT images of 34 adults (14 men, 20 women), aged 18.0 to 57.7 years (mean, 32.2 years) were selected. On 3D reconstruction, the GP of the IZC region was determined using the anatomical morphology, and its anteroposterior position on the selected axial slice was evaluated relative to the dental reference located between the maxillary first and second molars (U6–U7). On the selected coronal slice, two reference lines were established to evaluate the insertion angle and insertion depth (IZC thickness) for MIs. The same procedure was performed on slices with intervals of 1 mm mesially as well as distally up to reach 4 mm. The right and left sides were measured. In relation to U6-U7, the GP of the I...

Research paper thumbnail of Distalization rate of maxillary canines in an alveolus filled with leukocyte-platelet–rich fibrin in adults: A randomized controlled clinical split-mouth trial

American Journal of Orthodontics and Dentofacial Orthopedics

Research paper thumbnail of Stress Distribution Evaluation of the Periodontal Ligament in the Maxillary Canine for Retraction by Different Alveolar Corticotomy Techniques: A Three-dimensional Finite Element Analysis

The Journal of Contemporary Dental Practice, 2016

Aim: By using the finite element method (FEM), this study aimed to evaluate the effect of differe... more Aim: By using the finite element method (FEM), this study aimed to evaluate the effect of different corticotomy formats on the distribution and magnitude of stress on the periodontal ligament (PDL) during retraction of the maxillary canine. Materials and methods: A geometric model of the left hemi-jaw was created from computed tomography scan images of a dry human skull and loads were administered during distalization movement of the canine. Three trials were performed: (1) without corticotomy, (2) box-shaped corticotomy and perforations in the cortical bone of the canine (CVC) and (3) CVC and circularshaped corticotomy in the cortical bone of the edentulous space of the first premolar. Results: There was no difference in stress distribution among the different corticotomy formats. Conclusion: Different corticotomy formats used to accelerate orthodontic tooth movement did not affect stress distribution in the PDL during canine retraction.

Research paper thumbnail of Propulsores mandibulares para la corrección de maloclusiones de Clase II-1 subdivisión de Angle

Research paper thumbnail of Combined Periodontal, Orthodontic, and Prosthetic Treatment in an Adult Patient

Case Reports in Dentistry, 2015

A 41-year-old man had a significant loss of bone and supporting tissues with pathologic migration... more A 41-year-old man had a significant loss of bone and supporting tissues with pathologic migration of several teeth and several missing teeth. He was treated with an interdisciplinary therapeutic protocol that included nonsurgical periodontal therapy based on strict control of supragingival plaque, subgingival periodontal therapy, orthodontic and endodontic treatment, and replacement of restorations. The orthodontic therapy was performed in a severely reduced bone support and the presence of pathological tooth migration after periodontal disease control. The interdisciplinary treatment protocol was the key to achieve a significant improvement in his facial and dental esthetics, masticatory function, and quality of life.

Research paper thumbnail of Therapeutic approach to Class II, Division 1 malocclusion with maxillary functional orthopedics

Dental Press Journal of Orthodontics, 2015

INTRODUCTION: Interceptive treatment of Class II, Division 1 malocclusion is a challenge orthodon... more INTRODUCTION: Interceptive treatment of Class II, Division 1 malocclusion is a challenge orthodontists commonly face due to the different growth patterns they come across and the different treatment strategies they have available.OBJECTIVE: To report five cases of interceptive orthodontics performed with the aid of Klammt's elastic open activator (KEOA) to treat Class II, Division 1 malocclusion.METHODS: Treatment comprehends one or two phases; and the use of functional orthopedic appliances, whenever properly recommended, is able to minimize dentoskeletal discrepancies with consequent improvement in facial esthetics during the first stage of mixed dentition. The triad of diagnosis, correct appliance manufacture and patient's compliance is imperative to allow KEOA to contribute to Class II malocclusion treatment.RESULTS: Cases reported herein showed significant improvement in skeletal, dental and profile aspects, as evinced by cephalometric analysis and clinical photographs ...

Research paper thumbnail of Diagnosis and Treatment of Pseudo-Class III Malocclusion

Case Reports in Dentistry, 2014

Pseudo-Class III malocclusion is characterized by the presence of an anterior crossbite due to a ... more Pseudo-Class III malocclusion is characterized by the presence of an anterior crossbite due to a forward functional displacement of the mandible; in most cases, the maxillary incisors present some degree of retroclination, and the mandibular incisors are proclined. Various types of appliances have been described in the literature for the early treatment of pseudo-Class III malocclusion. The objectives of this paper are to demonstrate the importance of making the differential diagnosis between a skeletal and a pseudo-Class III malocclusion and to describe the correction of an anterior crossbite. The association of maxillary expansion and a 2 × 4 appliance can successfully be used to correct anterior crossbites.

Research paper thumbnail of Four impacted canines in an adult patient: A challenge in orthodontics

Indian Journal of Dental Research, 2014

This case report illustrates the management of four impacted canines in an adult patient associat... more This case report illustrates the management of four impacted canines in an adult patient associated with prolonged retention of the four deciduous teeth. The treatment plan was formulated to extract the lower deciduous teeth, application of the forced eruption with the permanent canines, and extract the upper permanent canines and maintenance of the maxillary deciduous canines. No reshaping of the maxillary deciduous teeth was performed because the patient was satisfied with the results.

Research paper thumbnail of Four impacted canines in an adult patient: A challenge in orthodontics

Indian Journal of Dental Research, 2014

This case report illustrates the management of four impacted canines in an adult patient associat... more This case report illustrates the management of four impacted canines in an adult patient associated with prolonged retention of the four deciduous teeth. The treatment plan was formulated to extract the lower deciduous teeth, application of the forced eruption with the permanent canines, and extract the upper permanent canines and maintenance of the maxillary deciduous canines. No reshaping of the maxillary deciduous teeth was performed because the patient was satisfied with the results.

Research paper thumbnail of Four impacted canines in an adult patient: A challenge in orthodontics

Indian Journal of Dental Research, 2014

This case report illustrates the management of four impacted canines in an adult patient associat... more This case report illustrates the management of four impacted canines in an adult patient associated with prolonged retention of the four deciduous teeth. The treatment plan was formulated to extract the lower deciduous teeth, application of the forced eruption with the permanent canines, and extract the upper permanent canines and maintenance of the maxillary deciduous canines. No reshaping of the maxillary deciduous teeth was performed because the patient was satisfied with the results.