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1.
Minerva Stomatol ; 69(3): 159-164, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32610724

RESUMEN

BACKGROUND: An observational case-control study was designed to retrospectively assess the association among sex, skeletal and dental variables and the and the palatal maxillary canine impaction. METHODS: The STROBE guidelines were followed. The records of 2195 subjects were analyzed. The data records of subjects with palatally displaced canine (PDC) were compared with the data of randomly selected subjects without PDC. Descriptive statistics, logistic regression model and χ2 test were used. RESULTS: One hundred and one subjects presented at least one PDC; 106 subjects without PDC were randomly selected. From the logistic model, it was found that only gender and persistence of the deciduous canine were significantly associated with PDC. The Chi-square test showed a correlation between the presence of upper lateral incisor anomalies and PDC, otherwise, considering the unilateral impaction, there was no statistically significant difference in the relationship between canine impaction and the presence of the lateral incisor anomalies, on the same or opposite side of the impaction. CONCLUSIONS: The female sex and the persistence of maxillary deciduous canines are associated with PDC. The anomalies of the lateral incisor do not seem to play a mechanistic role, but could rather represent a genetic variable of the canine eruption disorder.


Asunto(s)
Incisivo , Diente Impactado , Estudios de Casos y Controles , Diente Canino , Femenino , Humanos , Maxilar , Estudios Retrospectivos
2.
J Contemp Dent Pract ; 21(4): 383-389, 2020 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-32584273

RESUMEN

AIM: This study aimed to investigate the influence of using dual-cure composite core materials for fiber post luting on the fracture resistance of endodontically treated maxillary central incisors. MATERIALS AND METHODS: Fifty sound and recently extracted maxillary central incisors were endodontically treated and distributed into five groups. In the control group, access cavities were restored with the composite resin. Experimental groups had the coronal structure trimmed 2 mm above the cementoenamel junction. Teeth were restored with fiber posts and different combinations of luting and core materials: RelyX Unicem for post luting and MultiCore for core buildup; MultiCore for post luting and core buildup; RelyX Unicem for post luting and LuxaCore for core buildup; or LuxaCore for post luting and core buildup. All teeth were restored with zirconium crowns and subjected to thermocycling (6000 cycles 5/55°C). Loading of the teeth was applied at 135° to the palatal surface, using a universal testing machine at a cross-speed of 0.5 mm/minute until failure. The mode of failure was analyzed under a digital microscope. RESULTS: The fracture resistance of the control group was significantly higher than the experimental groups (p < 0.05). There was no significant difference between the experimental groups (p > 0.05). All teeth demonstrated nonrestorable failures. CONCLUSION: With the presence of the ferrule effect and crown restoration, the selected materials for post luting and core buildup have no significant influence on the fracture resistance of the endodontically treated teeth. CLINICAL SIGNIFICANCE: The use of the same dual-cure composite core materials for fiber post luting and core buildup would simplify the clinical procedure without enhancement of the fracture resistance of the endodontically treated tooth.


Asunto(s)
Técnica de Perno Muñón , Fracturas de los Dientes , Diente no Vital , Resinas Compuestas , Coronas , Fracaso de la Restauración Dental , Análisis del Estrés Dental , Humanos , Incisivo
3.
Eur J Paediatr Dent ; 21(2): 163-166, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32567950

RESUMEN

MIH is still a challenge in paediatric dentistry, due to the high sensitivity caused to the first permanent molars, that can greatly reduce the cooperation either for home oral hygiene or for in-office treatment. In this contest the use of ozone emphasises the ART technique (Atraumatic Restorative Treatment) and introduces modern "no aerosol" concept.


Asunto(s)
Tratamiento Restaurativo Atraumático Dental , Hipoplasia del Esmalte Dental , Ozono , Niño , Humanos , Incisivo , Diente Molar , Prevalencia
4.
Dental Press J Orthod ; 25(2): 86-102, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-32490929

RESUMEN

INTRODUCTION: A significant increase in the number of adults in search of orthodontic treatment has raised a new challenge for orthodontists: the need to interact with other specialties to achieve excellent results, particularly when dealing with smile aesthetics and facial balance. Several factors should be considered to respond to their demand: adequate tooth leveling and alignment, individual tooth proportions between adjacent teeth and their contralateral teeth, shape and natural appearance of each tooth and gingival architecture, which should all be in agreement with facial harmony. Maxillary or mandibular incisors congenitally missing or lost due to caries or trauma and tooth-size discrepancies (Bolton) are some of the important aesthetic challenges for an integrated orthodontic treatment. OBJECTIVES: This study describes cases that illustrate the clinical challenges of treating the anterior area, as well as the multidisciplinary strategies required for their resolution. CONCLUSION: The increasingly frequent multidisciplinary orthodontic treatments of complex cases seem to effectively maximize aesthetic and functional results using a combination of procedures conducted by specialists in related areas, such as Surgery, Prosthetics, Implantology, Restorative Dentistry and Periodontics.


Asunto(s)
Estética Dental , Incisivo , Adulto , Humanos , Maxilar , Ortodoncistas , Sonrisa
5.
Medicine (Baltimore) ; 99(22): e20372, 2020 May 29.
Artículo en Inglés | MEDLINE | ID: mdl-32481420

RESUMEN

The present study investigated the effectiveness of a Carisolv III + 0.5% sodium hypochlorite (NaOCl)-based root canal irrigant for smear layer removal.Forty maxillary incisors were randomly divided into 4 groups (n = 10 per group). The canals in group A (experimental) were prepared with 0.5% NaOCl, and Carisolv III and 0.5% NaOCl was used for the final washing; groups B and C (positive controls) used 2% and 5.25% NaOCl, respectively; and group D (negative control) used phosphate-buffered saline (PBS). Ethylenediaminetetraacetic acid (EDTA) was used for all of the groups. A 5-point scoring scale and scanning electron microscopy were used to evaluate the effectiveness of the irrigants. The canals were consistently cleaner in the coronal and middle thirds than in the apical thirds (P < .05).For cleaning the root canals, 5.25% NaOCl was more effective than 2% NaOCl, 0.5% NaOCl + Carisolv III, and phosphate-buffered saline , respectively (P < .05). The 2% NaOCl solution showed similar results to 0.5% NaOCl + Carisolv III (P > .05). The combination of 5.25% NaOCl and 17% EDTA remains the most effective irrigant for removal of the root canal smear layer.A combination of Carisolv III + 0.5% NaOCl (with 17% EDTA) showed a cleaning ability similar to that of 2% NaOCl (with 17% EDTA).


Asunto(s)
Ácido Glutámico/uso terapéutico , Leucina/uso terapéutico , Lisina/uso terapéutico , Irrigantes del Conducto Radicular/uso terapéutico , Tratamiento del Conducto Radicular/métodos , Hipoclorito de Sodio/uso terapéutico , Adulto , Cavidad Pulpar/cirugía , Femenino , Humanos , Técnicas In Vitro , Incisivo/cirugía , Masculino , Persona de Mediana Edad
6.
Int J Comput Dent ; 23(2): 119-128, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32555765

RESUMEN

AIM: To compare the accuracy and effort of digital workflow for guided endodontic access (GEA) procedures using two different software applications in 3D-printed teeth modeled to simulate pulp canal obliteration (PCO) in vitro. MATERIALS AND METHODS: 32 3D-printed incisors with simulated PCO were fabricated and mounted, four each on maxillary and mandibular study arches. Cone beam computed tomography (CBCT) and 3D surface scans were matched and used to virtually plan and prepare GEA by one operator using two different methods: 1) CoDiagnostiX (CDX; Dental Wings) with 3D-printed templates, and 2) Sicat Endo (SE; Sicat) with subtractive CAD/CAM-manufactured templates. Postoperative CBCT and virtual planning data were superimposed for analysis. Accuracy was assessed by measuring the discrepancies between planned and prepared cavities at the tip of the bur (three spatial dimensions, 3D vector, angle). Virtual planning effort was defined as the time and number of computer clicks. A 95% confidence interval (CI) was computed for each sample. RESULTS: SE successfully located root canals for GEA in 16/16 cases (100%) and CDX in 15/16 cases (94%). SE resulted in less mean deviation at the tip of the bur with regard to distance in the labial-oral direction (0.12 mm), 3D vector (0.35 mm), and angle (0.68 degrees) compared with CDX (0.54 mm, 0.74 mm, 1.57 degrees, respectively; P < 0.001). CDX required less mean planning time and effort for each four-tooth arch (10 min 50 s, 107 clicks) than SE (20 min 28 s, 341 clicks; P < 0.05). CONCLUSIONS: Both methods enabled rapid drill path planning, a predictable GEA procedure, and the reliable location of root canals in teeth with PCO without perforation.


Asunto(s)
Endodoncia , Flujo de Trabajo , Tomografía Computarizada de Haz Cónico , Cavidad Pulpar , Humanos , Incisivo
7.
J Adhes Dent ; 22(3): 249-254, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32435765

RESUMEN

PURPOSE: The management of complicated crown-root fractures is challenging for endodontic restoration. The present case describes a patient who sustained trauma to the maxillary right central incisor. MATERIALS AND METHODS: Clinical and radiographic examination showed a complicated crown-root fracture and incomplete root development with periapical radiolucency and inadequate endodontic treatment with overfilling. Orthograde retreatment with MTA apical closure combined with a microsurgical approach to remove of extruded material was performed. Coronal sealing was accomplished with a direct adhesive restoration and marginal relocation. RESULTS: A 5-year follow-up showed complete healing of the periapical lesion and correct preservation of function and esthetic parameters. CONCLUSION: A modern minimally invasive treatment protocol allows the maximum conservation of residual dental tissues.


Asunto(s)
Incisivo , Fracturas de los Dientes , Estudios de Seguimiento , Humanos
8.
Indian J Dent Res ; 31(2): 175-179, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32436893

RESUMEN

Aims: To calculate the relative distance between the incisive canal and maxillary central incisors using cone beam computed tomography (CBCT) and utilize the results in treatment planning in a clinical setting. Methods and Materials: A retrospective study was conducted on CBCT taken for other purposes in the Oral and Maxillofacial Radiology Department. All the quantitative measurements were performed between the incisive canal and both maxillary central incisors using CBCT on 61 subjects. The anterior-posterior measurements were taken on both sides and the average of both values was considered for the statistical analysis. All the linear measurements were performed on the axial plane at three different vertical reference points located on the sagittal plane. Statistical Analysis: The interexaminer reliability was tested by interclass correlation coefficient using two-way mixed and absolute agreement model. The comparison of linear measurement among each level was done by "Repeated measure ANOVA" and contrast method was used for pair-wise comparison when repeated measure analysis of variance (ANOVA) was significant. Results: The average anterior-posterior distance between the maxillary central incisor roots and the incisive canal measured was approximately 5-6 mm. The incisive canal width increases from the root apex level of maxillary central incisors (P3) to the oral opening level of the incisive canal (P1). Conclusions: The results of our study could be helpful in a clinical setting requires significant retraction of maxillary incisors or implant placement in maxillary anterior region.


Asunto(s)
Incisivo , Maxilar , Tomografía Computarizada de Haz Cónico , Reproducibilidad de los Resultados , Estudios Retrospectivos
9.
Indian J Dent Res ; 31(2): 236-240, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32436903

RESUMEN

Aims: Considering new ceramic systems, doubts about the appropriate combination of ceramics and cement are common. Settings and Design: To evaluate the influence of the elastic modulus (E) of cement agents associated with different indirect veneers on the stress distribution using finite element analysis. Methods and Materials: The finite element analysis was applied to evaluate the stress distribution on the structures. For that, a computer-aided design software was used for a three-dimensional (3D) modeling of an upper central incisor with preparation for an indirect veneer. The model was imported into the analysis software in STEP (Standard for Exchange of Product data) format. Tetrahedral elements formed the mesh. Solids were considered isotropic, linearly elastic, homogeneous, and with ideal contacts. Load application (100N, 45°) occurred on the lingual face. Cement agents have their E classified as low, intermediate, and high. The ceramic materials used were a hybrid ceramic, a zirconia reinforced lithium silicate and a lithium disilicate. Results: It was observed that none of the factors significantly influenced the stress concentration in dentine. Groups with high E cementing agent showed the highest stress peaks. The E of restorative material was significant for the stress generated in the veneer, and groups with hybrid ceramic presented more homogeneous stress results. Conclusions: The higher E of the cement agent and the ceramic, the higher the stress concentration, suggesting that hybrid ceramic associated with low elastic modulus resinous cement has superior biomechanical behavior.


Asunto(s)
Porcelana Dental , Incisivo , Cerámica , Cementos Dentales , Materiales Dentales , Análisis del Estrés Dental , Análisis de Elementos Finitos , Ensayo de Materiales , Estrés Mecánico
10.
Int J Esthet Dent ; 15 Suppl 1: S14-S31, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32467932

RESUMEN

In patients with missing maxillary anterior teeth, orthodontic space closure is an evidence-based, effective treatment option: probably the best if the goal is long-term periodontal health. Nowadays, this approach is possible in all malocclusions as the first step of an interdisciplinary approach, which aims not only at an optimum esthetic and functional result, but moreover at reducing the -invasiveness of the subsequent restorative treatment. Space closure should be considered the first alternative in growing patients and when the gingival margins are visible. This essay presents the rationale for space closure and provides clinical tips for interdisciplinary treatment planning and finishing.


Asunto(s)
Anodoncia , Maloclusión , Estética Dental , Humanos , Incisivo , Cierre del Espacio Ortodóncico
11.
Int J Esthet Dent ; 15 Suppl 1: S32-S45, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32467933

RESUMEN

Bilateral or unilateral congenitally missing maxillary lateral incisors is a common clinical situation that requires an interdisciplinary approach. It is often complicated by the presence of narrower teeth. Occlusal, periodontal, and esthetic considerations will influence the decision to close the space for a canine-lateral substitution or to open the space for a prosthodontic replacement of the missing lateral incisor. The team should define the proper dental position to provide a stable occlusion and dental esthetics obtained with a minimally invasive preparation. The restorative approach should provide a long-term functional and esthetic solution in the transitional period from adolescence to adulthood, reversible for future possible interventions.


Asunto(s)
Anodoncia , Estética Dental , Adolescente , Adulto , Oclusión Dental , Humanos , Incisivo , Maxilar
12.
Int J Esthet Dent ; 15 Suppl 1: S88-S97, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32467939

RESUMEN

It is common knowledge that dental implants should not be inserted in adolescents, before completion of skeletal growth, because they behave as ankylosed teeth and remain in a fixed position while the surrounding bone and teeth are still developing, with consequential worsening esthetic damage. However, there is growing evidence that this phenomenon may continue throughout life in a large number of adult patients, although with a great variability in onset, progression, and extent. Infraocclusion and interproximal contact loss are the more common complications, and the majority of clinically significant cases are located in the anterior maxilla. The esthetic impact is mostly minimal, but in some cases the patient's smile may be severely compromised. Therefore, adult patients need to be informed when dental implants are considered to replace anterior missing teeth.


Asunto(s)
Pérdida de Hueso Alveolar , Implantes Dentales de Diente Único , Adolescente , Adulto , Implantación Dental Endoósea , Estética Dental , Humanos , Incisivo , Maxilar , Erupción Dental
13.
Int J Esthet Dent ; 15(2): 184-194, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32467947

RESUMEN

BACKGROUND: Gingival tissue circumforaneous to the maxillary anterior teeth has been known to play a crucial role in smile esthetics. Reports in the literature suggest that both tooth and gingival display in the premolar areas are relevant for a beautiful smile. The present study examines the amount of tooth and gingiva exhibited in relation to the gingival smile line (GSL) and the interdental smile line (ISL). MATERIALS AND METHODS: The study population comprised 120 periodontally healthy patients within an age range of 20 to 40 years who were equally divided into two groups based on gender. The gingival zenith position (GZP), gingival zenith level (GZL), presence or absence of interdental papillae, GSL, and ISL were determined for the maxillary anterior teeth up to the second premolars. RESULTS: The mean GZL for the second premolars was found to be highest, followed by that for the first premolars and the lateral incisors. The GZL for female patients was slightly higher than that for males. The difference between the GZL for the first and second premolars in both the males and females was statistically significant (P < 0.0001). The majority of participants - 36 (60%) of the males and 33 (55%) of the females - displayed first premolars, whereas both the premolars were visible in 18 (30%) males and 22 (36%) of the females. CONCLUSIONS: Within the smile corridor, the majority of participants exhibited tooth and gingival display in the maxillary anterior teeth and premolar region. The GZL was greatest for the second premolars and smallest for the lateral incisors, indicating a considerable amount of gingival tissue display during smile for both GSL and ISL.


Asunto(s)
Estética Dental , Encía , Adulto , Diente Premolar , Femenino , Humanos , Incisivo , Masculino , Maxilar , Sonrisa , Adulto Joven
14.
J Contemp Dent Pract ; 21(2): 207-210, 2020 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-32381829

RESUMEN

AIM: The aim of the study was to quantify the specific spatial displacement of gingival zenith (GZ) and determine a representative value for the interdental papilla height as a percentage ratio of clinical crown length (CL), as measured from GZ in the maxillary anterior dentition. MATERIALS AND METHODS: A total of 100 subjects and 1,200 interdental papillae were included. Eighty percent of the population presented with the gingival margin of lateral incisor (LI) teeth positioned coronally to the GZ of the ipsilateral canine (C) and central incisor (CI). RESULTS: No significant difference was found between mesial and distal papilla proportion (DPP) of maxillary incisor groups. In the C group, numerical values showed higher DPP. CONCLUSION: The data achieved provide the ideal numerical values for prosthetic, restorative, periodontal, implant, postorthodontic, and esthetic treatment outcomes. CLINICAL SIGNIFICANCE: The study describes the importance of quantifying the ideal numerical values for prosthetic, restorative, periodontal, implant, postorthodontic, and esthetic treatment outcomes. The readers should understand to quantify the specific spatial displacement of GZ and determine a representative value for the interdental papilla height as a percentage ratio of clinical CL, as measured from GZ in the maxillary anterior dentition.


Asunto(s)
Estética Dental , Encía , Estética , Incisivo , Maxilar
15.
Swiss Dent J ; 130(5): 397-406, 2020 May 11.
Artículo en Alemán | MEDLINE | ID: mdl-32390410

RESUMEN

In the prosthetic treatment planning there is an important question either you will have an surgery procedure or you will solve the requirement with a conventional treatment. It requires the discussion with the patient of all different parameters like risk factors in the pink - and white esthetic, condition of the adjacent teeth, outcome, long-term stability, costs, etc. In consideration of all facts a decision must be made of which adequate therapy is feasible. In this case on request of the patient the missing right central incisor will be replaced with a new zirconia-layered ceramicbridge. The article describes the approach in detailed steps how to manage in an easy conservative way the pontic area and how to create an esthetic outcome. Therefore the author manufactured different kind of temporaries and reconfigure them. After the stabilization of the desired result the situation can be transferred in the definitive zirconia framework-design. Final it is the responsibility of the dental technician to get the right colour and more important the right shape of the teeth for an esthetic result.


Asunto(s)
Estética Dental , Incisivo , Dentadura Parcial Fija , Humanos
16.
J Oral Sci ; 62(2): 180-183, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32224571

RESUMEN

This study aimed to evaluate the prevalence of internal symmetry (the number and morphology of root canals) in the mandibular incisors using cone beam computed tomography (CBCT). A total of 302 CBCT scans involving 1,208 mandibular incisors were evaluated using the Vertucci's classification regarding the number and configuration of root canals. The central mandibular incisors exhibited two root canals in 22.6% of patients and lateral incisors in 24.3% of patients. Most teeth (76.4%) had a type I configuration (a single root canal, 1-1), 21.7% had type II (2-1), 1.1% had type V (1-2), and 0.8% had type IV (2-2). Teeth with a type-III configuration (1-2-1) were not found. In total, 17.5% of patients had a symmetric appearance of the two-canalled central mandibular incisors and 20.5% had a bilateral appearance of the two-canal lateral incisors. Moreover, in 12.3% of the patients, all four incisors showed two root canals. The highest degree of symmetry was found in incisors that had one root canal (central incisors: 217 of 302, lateral incisors: 229 of 302), followed by type 2-1 incisors (central incisors 50, lateral incisors 58). The influence of sex and age on the prevalence of symmetries was not significant. Concluding, the internal anatomy of the mandibular incisors cannot not be sufficiently predicted from the root canal anatomy of the contralateral tooth. Thorough clinical and radiographic inspection of each tooth remains mandatory to address the internal anatomy of the mandibular incisors correctly.


Asunto(s)
Cavidad Pulpar , Incisivo , Tomografía Computarizada de Haz Cónico , Humanos , Mandíbula , Raíz del Diente
17.
Rev. Asoc. Odontol. Argent ; 108(1): 19-24, ene.-abr. 2020. ilus
Artículo en Español | LILACS | ID: biblio-1096713

RESUMEN

Objetivo: Presentar la terapia regenerativa como una al- ternativa para la resolución de un caso de traumatismo denta- rio en un diente permanente incompletamente desarrollado. Caso clínico: Se realizó el tratamiento de un incisivo central superior con mortificación pulpar y periodontitis api- cal aguda subsecuente a trauma dental en un paciente de 8 años de edad. Se aplicó el protocolo de regeneración pulpar recomendado por la Asociación Americana de Endodoncia. Se estimuló la formación de un coágulo en el interior del con- ducto a partir de los tejidos periapicales, previa desinfección con la pasta triple antibiótica, y finalmente se colocó mineral trióxido agregado coronal a este. Se obtuvo así una matriz es- teril que permitió el crecimiento de nuevo tejido y se realiza- ron controles periódicos durante 4 años. Se constató silencio clínico. Radiográficamente, se observó la formación de tejido sobre las paredes del conducto y el cierre apical. Conclusión: La terapia regenerativa como alternativa de tratamiento, en este caso, permitió la disminución de la luz del conducto por el depósito de tejidos calcificados y el cierre del foramen apical, mejorando el pronóstico de la pieza dentaria (AU)


Aim: To present pulp regeneration therapy as an alter- native to resolve dental trauma in immature permanent teeth. Clinical case: We report a clinical case of an immature central superior incisor with pulp mortification and acute api- cal periodontitis subsequent to dental trauma, in an 8 year old patient. The pulp Regeneration protocol recommended by the American Endodontics Association was applied. We stimulated a clot formation inside the duct from periapical tissues and after disinfection with a mixture of three antibi- otics mineral trioxide aggregated was finally place coronal to the clot. Thus a sterile matrix was obtained that allowed new tissue's growth. Periodic check-up visits were carried out over a 4 years period. Clinical silence was observed. Tissue formation on duct walls and apical closure were radiograph- ically detected (AU) Conclusion: Regenerative therapy is an alternative for the treatment of immature permanent teeth, in ths clinical case it allowed the reduction of the width of the duct by the opposition of hard tissues and the closure of the apical fora- men improving the forecast of these teeth.


Asunto(s)
Regeneración , Dentición Permanente , Incisivo/lesiones , Periodontitis Periapical , Argentina , Materiales de Obturación del Conducto Radicular/uso terapéutico , Cicatrización de Heridas/fisiología , Traumatismos de los Dientes/complicaciones , Necrosis de la Pulpa Dental , Ápice del Diente/crecimiento & desarrollo , Servicio Odontológico Hospitalario
18.
Compend Contin Educ Dent ; 41(4): 204-209; quiz 210, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-32255651

RESUMEN

Having a thorough understanding of classical esthetic principles, including basic tooth shape and form rules, is crucial for clinicians to achieve successful esthetic outcomes, even when implementing digital technologies in their dental offices. The use of advanced, cutting-edge digital tools does not negate the need to adhere to timeless fundamentals of esthetic dentistry. This article reviews key esthetic principles and describes their application in treating a challenging cosmetic case. Showcasing the use of smile design software, the case illustrates the diagnosis, planning, and clinical execution used to mask a congenitally missing lateral incisor while preserving the natural dentition on the contralateral side. The principles of symmetry and harmony are employed to create a smile in which the restorative dentistry would be imperceptible and the remaining dentition protected from structural compromise.


Asunto(s)
Estética Dental , Ilusiones , Humanos , Incisivo , Sonrisa
19.
Pediatr Dent ; 42(2): 134-140, 2020 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-32276681

RESUMEN

Purpose: The purpose of this case-control study was to investigate the relationship between molar-incisor hypomineralization (MIH) and pre-, peri-, and postnatal conditions of children and mothers in South Korea. Methods: The Korean Academy of Pediatric Dentistry con- ducted this study to examine factors associated with MIH among six- to 13-year-olds. The European Academy of Pediatric Dentistry criteria and self-administered questionnaires associated with MIH were used. Results: In multivariable logistic regression analysis, the odds ratio (OR) of MIH for children whose mothers used health supplements during pregnancy was 0.65 (P=0.009). Also, children with more than three hours of out- door activities per day tended to have a lower MIH (P=0.03) than did those with zero hours of outdoor activity. Additionally, the OR of MIH for children whose mothers smoked during pregnancy was 2.37 (P=0.019) and the MIH found to be 1.33 times more frequent in children with respiratory infections during the first three years of life (P=0.048). Conclusions: Maternal smoking during pregnancy and child's pediatric respiratory infection suffered within three years after birth are factors associated with the MIH among Korean children. Further study is needed because the prevalence of MIH in children whose mothers taking health supplements (vitamins or folic acid or iron) during pregnancy is low.


Asunto(s)
Hipoplasia del Esmalte Dental , Incisivo , Estudios de Casos y Controles , Niño , Femenino , Humanos , Diente Molar , Embarazo , Prevalencia
20.
Pediatr Dent ; 42(2): 146-149, 2020 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-32276683

RESUMEN

Developmental defects of enamel (DDE) in children range from moderate to severe and may predispose to dental fractures and early childhood caries. The prevalence of DDE in the primary dentition range from 24 to 75 percent, and the right time to diagnose DDE should be as soon as the teeth erupt. However, early detection of DDE in primary incisors is difficult because parents seldom visit the dentist at this age and, later on, caries lesions mask the original alteration. The purpose of this paper was to present three cases of unique and similar dental defects appearing in very young children from different countries-defects that probably share the same etiology. Given the severity of the defects and the children's' age, these could be the first reported cases of preeruptive intracoronal resorption (PEIR) in primary incisors. This paper also discusses the differentiation between DDE and PEIR.


Asunto(s)
Caries Dental , Hipoplasia del Esmalte Dental , Niño , Preescolar , Esmalte Dental , Humanos , Incisivo , Prevalencia , Diente Primario
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