Zapalenie przyzębia a ryzyko przedwczesnych porodów i niskiej masy urodzeniowej – metaanaliza

Introduction: Periodontitis and prematurity are social diseases with common risk factors. In 1996 periodontitis was proven to be a possible significant and independent risk factor of preterm birth of newborns with low body weight. Numerous studies on the influence of periodontitis on the time of birth and/or birth weight of newborns have been conducted throughout the world since, including several ones in Poland, but their results have been inconsistent. Work objective: A meta-analysis of case-control, prospective and cohort studies on the influence of periodontitis on preterm birth and low birth weight. Methods: The international and Polish bibliography bases were searched for essays on the relationship between periodontitis and preterm birth and/or low birth weight published between 1996 and 2010. All essays qualified for the meta-analysis were subjected to qualitative evaluation. The calculation of the overall odds ratio used both, fixed-effects and random-effects models (DerSimonian-Liard method). The heterogeneity of the included studies and effect of publication bias were also subjected to evaluation. Results: The meta-analysis included 15 case-control studies, 1 cross-sectional study, and 6 cohort studies. The essays came from 4 continents: 8 from Europe (including 2 from Poland), 7 from South America, 4 from North America, and 3 from Asia. The total analysis covered 12047 pregnant women. The overall odds ratio of giving premature birth to a child with low weight for mothers with periodontitis in the model of random effects amounted to 2.35 (1.88-2.93, pWprowadzenie: Zapalenie przyzębia i wcześniactwo to choroby społeczne o wspólnych czynnikach ryzyka. W 1996 roku wskazano, że zapalenie przyzębia mogłoby być istotnym i niezależnym czynnikiem ryzyka przedwczesnego porodu noworodka o niskiej masie ciała. Od tego czasu przeprowadzono wiele badań na świecie i kilka w Polsce nad wpływem zapalenia przyzębia na termin porodu i/lub masę urodzeniową noworodka. Ich wyniki były sprzeczne. Cel pracy: Metaanaliza badań kliniczno-kontrolnych, przekrojowych i kohortowych dotyczących wpływu zapalenia przyzębia na przedwczesny poród noworodka o niskiej masie urodzeniowej. Metody: W międzynarodowych i polskiej bazie bibliograficznej poszukiwano prac opublikowanych w latach od 1996 do 2010 na temat związków pomiędzy zapaleniem przyzębia z przedwczesnym porodem i/lub niską masą urodzeniową noworodka. Wszystkie prace zakwalifikowane do metaanalizy były poddane ocenie jakościowej. Dla wyliczenia skumulowanego ilorazu szans zastosowano model efektów stałych i model efektów losowych w metodzie DerSimonian-Liard. Oceniano także jednorodność włączonych badań i efekt obciążenia publikacyjnego. Wyniki: W metaanalizie uwzględniono 15 badań kliniczno-kontrolnych, 1 przekrojową oraz 6 kohortowych. Prace pochodziły z 4 kontynentów: 8 z Europy (w tym dwie polskie), 7 z Ameryki Południowej, 4 z Ameryki Północnej i 3 z Azji. Analizie łącznej poddano 12047 kobiet w ciąży. Skumulowany iloraz szans przedwczesnego urodzenia dziecka o niskiej masie dla matek z zapaleniem przyzębia w modelu efektów losowych wynosił 2,35 (1,88-2,93,

Diagnostics for upper impacted canines – based on the literature

Impacted canines are the second most common (after the third molars) impacted teeth. Good diagnostics for impacted canines is possible at approx. 10 years of age, when the incorrect angulation of the crown of the tooth can be seen on the panoramic X-ray. The initial assessment of impacted canines includes a basic dental examination (presence of persistent deciduous teeth, lack of erupted permanent canines in the dental arch after the end of tooth eruption) and a palpative examination of alveolar bone in the vestibulum. The diagnostics is based mainly on X-rays: mainly panoramic images, tooth X-rays and occlusal plate pictures. The new tool in the diagnostics of impacted teeth is computed tomography, especially CBCT. The study collates diagnostic methods based primarily on panoramic X-ray images for the assessment and prediction of the spontaneous eruption chances of maxillary canines

Orthodontic and orthodontic-surgical management of impacted canines – a literature review

The phenomenon of impacted canines is observed in about 0.8–4.9% of patients treated orthodontically. In 85% of cases it is observed unilaterally. Besides the third molars, canines are the largest group of impacted teeth. The impacted tooth diagnosis includes clinical and radiological examination. In this particular case, the screening test is a pantomographic X-ray. The full picture of the location of an impacted tooth and adjacent structures can be obtained only through the use of computed tomography. Only a full diagnosis allows a decision to be made as to the treatment of impacted canines and permits an evaluation of the possibility of treatment success. In the case of impacted teeth, the procedures may be varied. Mostly, the tooth is either left in the bone or tracked orthodontically. Rarely is it extracted. In some cases, the surgical procedure includes the autotransplantation of the impacted tooth

Comparison of Two Chosen 3D Printing Resins Designed for Orthodontic Use: An In Vitro Study

(1) Background: In recent years, 3D printing has become a highly popular tool for manufacturing in various fields such as aviation, automobiles, plastics, and even medicine, including dentistry. Three-dimensional printing allows dentists to create high-precision models of teeth and jaw structure, and enables them to develop customized tools for patients’ treatment. The range of resins used in dentistry is quite large, and this branch is developing rapidly; hence, studies comparing different resins are required. The present study aimed to compare the mechanical properties of two chosen resins used in dentistry. (2) Materials and methods: Ten specimens each of two types of 3D-printable resins (BioMed Amber and IBT, developed by Formlabs) were prepared. The samples were printed on a Formlabs Form 2 3D printer according to ISO standards. Samples for the compression test were rectangular in shape (10 ± 0.2 mm × 10 ± 0.2 mm × 4 ± 0.2 mm), while the samples used for the tensile test were dumbbell shaped (75 mm long, with 10 mm end width and 2 mm thickness). Tensile and compression tests of both materials were performed in accordance with the appropriate ISO standards. (3) Results: The BioMed Amber resin was more resistant to compression and tensile forces, thus implying that the resin could withstand higher stress during stretching, pulling, or pushing. The IBT resin was less resistant to such loads, and failure of this material occurred at lower forces than those for Biomed Amber. An ANOVA test confirmed that the observed differences were statistically significant (p < 0.001). (4) Conclusions: Based on the properties of both materials, the IBT resin could be better used as a tray for placing orthodontic brackets through an indirect bonding technique, while the BioMed Amber resin would be more useful as a surgical guide for placing dental implants and mini-implants. Further potential fields of application of the resins should be investigated

Occlusal Disorders among Patients with Total Clefts of Lip, Alveolar Bone, and Palate

Clefts are common birth defects. They are accompanied by various malformations, including disturbances in facial look as well as skeletal disorders that include malocclusions, most frequently crossbites and class III anomalies. The aim of the study was to present the commonest malocclusions in patients with total cleft of the lip, alveolar bone and palate (n=154) and compare the results to the healthy on-cleft patients (n=151). Normal occlusion, characteristic for I angle class, was observed in 50% of the control group and 30% of the examined. In the examined patients with clefts, most frequently crossbite and open bite on the cleft side was observed. In patients with clefts, only 2 out of 154 patients presented isolated dental anomalies. In healthy individuals the commonest occlusal disorder was distal occlusion and dental anomalies. The commonest malocclusions among patients with clefts are crossbites and class III malocclusions

Comparison of the Compression and Tensile Modulus of Two Chosen Resins Used in Dentistry for 3D Printing

(1) The CAD/CAM technique exploiting 3D printing is becoming more and more popular in dentistry. The resins are used in all the dental specialties, including conservative dentistry, prosthodontics, surgery, and orthodontics. The interest in investigating the different properties of dental materials has been an aim of researchers. The purpose of the presented study was to compare the properties of two 3D-printable dental resins (both rigid, used for medical purposes). (2) Methods: Ten blocks of two-type shapes were printed on a printer designed for medical use. The tensile modulus and compression were investigated and compared. The axial compression test was performed according to the PN-EN ISO 604:2003 norm, while the tensile test was performed according to the PN-En ISO 527-1-2019 (E) norm. In the first test, the sample size of the perpendicular shape was 10 ± 0.2 mm × 10 ± 0.2 mm × 4 ± 0.2 mm and in the second it was 75 mm, the end width 10 mm, and the thickness 2 mm. (3) Results: The statistical analysis based on ANOVA tests showed that all the obtained results were statistically significant. Both of the examined materials had similar properties and were resistant and stable in shape. The tensile modulus and compression tests performed on them gave similar results. They also showed high durability to compression and tensility. (4) Conclusions: Both of the examined materials were durable and rigid materials. BioMed Amber was more resistant to compression, while Dental LT clear was more resistant in the tensility test. Although both resins had similar physical properties, it is still disputable whether the chosen materials could be used interchangeably

Psychosocial aspects of bruxism: the most paramount factor influencing teeth grinding

In clinical practice, patients suffering from an occlusal parafunctional activity have increased. It can be observed that a negative influence of environment aggravates patient's health. The aim of this paper is to present the impact of environment and development of human civilization on the prevalence of bruxism and the correlation between them. The authors grasp the most relevant aspects of psychological and anthropological factors changing over time as well as their interactions and describe a relationship between chronic stress and bruxism. Current literature shows how contemporary lifestyle, working environment, diet, and habits influence the patient's psychoemotional situation and the way these factors affect the occluso-muscle condition

Subjective and Objective Evaluation of the Symmetry of Maxillary Incisors among Residents of Southwest Poland

Dental aesthetics is an essential factor affecting people’s psychosocial wellbeing. One of the most critical components of an aesthetic smile is symmetry within the dentition. Dentists and orthodontists, unlike laypersons, are critical in assessing dental aesthetics. This study aimed to evaluate the accuracy of patients’ assessment of the symmetry of their maxillary incisors and some factors that influence it. The study was conducted on 83 participants aged from 11 to 39 years. First, the participants filled out a questionnaire to obtain patients’ opinions of the symmetry of their upper incisors. This stage was followed by an intraoral examination, during which we used a digital caliper to measure the width of four maxillary incisors. The data were entered into STATISTICA v. 13.3. The following conclusions were drawn from the study. First, the respondents were generally able to determine the asymmetry of the incisors. Second, among the maxillary incisors, the participants defined the symmetry of maxillary central incisors more accurately than the maxillary lateral incisors. The cut-off value for incisor asymmetry noticeable to a layperson is 0.2 mm for maxillary medial incisors and 0.55 for maxillary lateral incisors. Third, we found no dependence of the accuracy of the assessment of incisor asymmetry on the age of the subjects; however, in our study group, the age range (spread) was not significant, so further studies are recommended. Finally, results concerning the relationship with gender showed that males assess the level of symmetry of their maxillary incisors more accurately than females

Current Concepts and Challenges in the Treatment of Cleft Lip and Palate Patients—A Comprehensive Review

Cleft lip and cleft palate has one of the highest incidences in the malformations of the oral cavity, that varies between populations. The background underlying the issue of cleft lip and palate is multifactorial and greatly depends on the genetic factors and environmental factors. The aim of this nonsystematic narrative review is to present the cleft palate and or lip pediatric population as target for interdisciplinary treatment. The purpose of this narrative review is to sum up the modern knowledge on the treatment of patients with clefts, as well as to highlight the importance of the great need for cooperation between different dental specialists along with medical professionals such as oral surgeons, prosthodontists, orthodontists along with medical professions such as pediatricians, speech therapists and phoniatrics, and laryngologist