Effects of Ageing, Oestrogen Level and Altered Dietary Loading on Rat Mandibular Cartilage-A Polarised Light Microscopy Study.

Objective: The mandibular condylar cartilage (MCC) of rats was examined with polarised light microscopy (PLM) to study the effects of ageing, oestrogen level, and altered dietary loading on the structure of the MCC.

Materials And Methods: 96 Sprague-Dawley rats were separated into 12 groups based on their age (5 months [young] and 14 months [old]), oestrogen status (ovariectomised [OVX], non-ovariectomised [non-OVX]), and diet (hard, normal, or soft). The MCC specimens were examined using PLM to evaluate the orientation and retardation of collagen fibrils.

Effects of early and later timed cervical headgear treatment on the eruption timing and pattern of permanent upper canines and molars from 7 to 18 years of age: follow-up of a randomized controlled trial.

Background: Although cervical headgear (CH) is a widely studied method for the correction of Class II malocclusion, there is a lack of evidence regarding the effects of early versus later treatment timing on permanent upper canines and molars.

Objectives: To evaluate the differences between early versus later cervical headgear treatment to the eruption time and inclination of maxillary permanent canines and second molars, inclination of the first molars, and the overlapping between second and third molars.

Trial Design: Randomized, parallel-group, prospective controlled trial on timepoints T0-T2, follow-up study on T2-T4.

Association between subjective orthodontic treatment need, oral health-related quality of life, and occlusal deviations in a cohort of 17-year-old adolescents in Finland.

Objective: To investigate the relationship between self-perceived orthodontic treatment need, satisfaction with dental esthetics and occlusion, oral health-related quality of life (OHRQoL), occlusal deviations, and orthodontic treatment history of 17-year-olds.

Material And Methods: Clinical examination and standardized questionnaire were completed by 108 adolescents from two municipal clinics. OHRQoL was measured with the Oral Health Impact Profile (OHIP-14) and malocclusion severity using the Peer Assessment Rating (PAR) Index.

Translation, cross-cultural adaptation, and psychometric properties of the Finnish version of the Malocclusion Impact Questionnaire (MIQ).

Objectives: This study aimed to translate and adapt the Malocclusion Impact Questionnaire (MIQ) into Finnish; to estimate its psychometric properties when applied to Finnish adolescents; and to estimate the effect of demographic characteristics on the perceived impact of malocclusion.

Methods: The Finnish version of MIQ (MIQ-Fi) was established through translation, back-translation, and a pilot study. Psychometric properties were estimated using factorial validity (confirmatory factor analysis [CFA]), convergent validity (Average Variance Extracted [AVE]), and reliability (αordinal and ω).

Effectiveness of oral motor appliances on oral motor function and speech in children: a systematic review.

Background: Different oral motor appliances have been used in connection with speech therapy to improve oral motor function and speech development, but no consensus has been reached on the effectiveness of the appliances. The objective was to systematically review the effectiveness of oral motor appliances on oral motor function and speech in children with speech sound disorders (SSDs) or oral motor dysfunctions.

Methods: A systematic search was conducted up to February 2023 in the PubMed, Scopus, and Cochrane databases.

The relation of temporomandibular disorders with oral health-related quality of life in the Northern Finland Birth Cohort 1966.

Objective: This study aimed to evaluate the association between temporomandibular disorders (TMD) and oral health-related quality of life (OHRQoL) in an adult population.

Methods: The data included 1,768 adults 46 years of age in the Northern Finland Birth Cohort 1966 (NFBC1966) study. The symptoms, signs and diagnoses of TMD were assessed using a modified protocol of the Diagnostic Criteria for TMD (DC/TMD) and validated questionnaires.

Gender differences in the association between malocclusion traits and oral health-related quality of life in Finnish adults.

We aimed to evaluate the gender-specific associations of malocclusion traits with oral health-related quality of life (OHRQoL) among Finnish adults. Data were obtained from the Health 2000 Survey, Finland. Included participants (n = 3993) were ≥30 years old with OHRQoL and occlusion data.

Occlusal characteristics and oral health-related quality of life in adults operated due to sagittal synostosis in childhood: a case-control study with 26 years of follow-up.

Purpose: The aim of this case-control study was to investigate occlusal characteristics, received orthodontic treatment, oral health-related quality of life (OHRQoL), and satisfaction with dental esthetics in adults operated due to sagittal synostosis.

Methods: The study group consisted of 40 adults (25 males, 15 females, mean age 27.4 years, range 18-41) who were operated due to isolated sagittal synostosis in childhood.

The associations of dental aesthetics, oral health-related quality of life and satisfaction with aesthetics in an adult population.

Aim: The aim of this study was to investigate the gender-specific associations between dental aesthetics, oral health-related quality of life (OHRQoL), and satisfaction with dental aesthetics in an adult population.

Materials And Methods: The study population consisted of 1780 individuals (822 males and 958 females) from the Northern Finland Birth Cohort 1966 (NFBC1966). Dental aesthetics were evaluated from digital 3D dental models using the Aesthetic Component (AC) of the Index of Orthodontic Treatment Need (IOTN).

Appearance or attitude: what matters to craniosynostosis patients? Association of self-esteem, depressive symptoms, and facial aesthetics in patients with sagittal and metopic synostosis.

Purpose: The aim of this study was to investigate the presence of depressive symptoms and self-esteem, and their association with facial asymmetry in adults who were operated on in early childhood due to metopic and sagittal craniosynostosis.

Methods: The study population consisted of 49 non-syndromic patients of whom 41 had premature fusion of the sagittal and 8 of metopic suture. There were 64 controls from the Finnish National Register.

Self-perception of orofacial appearance: Brazil-Finland cross-national study.

Objective: (i) To study the measurement invariance of Orofacial Esthetic Scale (OES) and Psychosocial Impact of Dental Aesthetics Questionnaire (PIDAQ), (ii) to compare the perception of orofacial appearance (OA) and (iii) to study the frequency of individuals who have sought or received aesthetic dental treatment between Brazil and Finland.

Methods: This was a cross-sectional observational study with snowball non-probability sample selection. Students and staff from universities in Finland and Brazil were invited to participate.

Prevalence of sagittal molar and canine relationships, asymmetries and midline shift in relation to temporomandibular disorders (TMD) in a Finnish adult population.

Objective: To examine the prevalence of sagittal relationships, asymmetries and midline shift, and their associations with temporomandibular disorders (TMD) in the Northern Finland Birth Cohort 1966 (NFBC1966).

Materials And Methods: 1845 subjects participated in a clinical examination at the age of 46. Occlusal measurements were performed using 3D models.

Craniofacial characteristics and cosmetic satisfaction of patients with sagittal and metopic synostosis: a case-control study using 3D photogrammetric imaging.

Purpose: The aim of this study was to investigate the craniofacial and aesthetic characteristics of adult metopic and sagittal craniosynostosis patients operated on in early childhood compared to controls. The goal was to find objective measurements that would correlate with the patient's subjective self-evaluation of their own cosmetic appearance.

Methods: The study population consisted of 49 patients from whom 41 had premature fusion of the sagittal and in 8 of metopic suture.

Associations of sagittal malocclusions with dental arch characteristics and crowding in Northern Finland Birth Cohort 1966.

Objective: To analyse the associations between the widths and forms of dental arches, malocclusions and crowding in middle-aged adult population.

Materials And Methods: The study material is part of the Northern Finland Birth Cohort 1966 (NFBC1966); the subjects were examined at the age of 46 years. A total of 781 adults with full dentition and no orthodontic treatment history were included.

Malocclusion severity and its associations with oral health-related quality of life in an adult population.

Aim: The aim of this study was to investigate malocclusion severity and its associations with oral health-related quality of life (OHRQoL) among middle-aged adults.

Materials And Methods: The study material consisted of 1786 subjects from the Northern Finland Birth Cohort 1966 who attended dental and oral examination as part of the 46-year-old follow-up study. Malocclusion severity was assessed using the Dental Health Component (DHC) of the Index of Orthodontic Treatment Need (IOTN) and the Peer Assessment Rating index (PAR) from digital 3D dental models.

Associations between Bolton ratio and overjet deviations in a Finnish adult population.

Objective: To determine the anterior Bolton ratio for a Finnish adult population and to investigate its associations with overjet.

Material And Methods: This study is part of the Northern Finland Birth Cohort 1966. Clinical oral investigations, including three-dimensional intraoral scanning and registration of occlusion, were performed in connection with the 46-year follow-up for 1,961 subjects.

Profile shape variation and sexual dimorphism amongst middle-aged Northern Europeans.

Aim: To explore profile shape variation in a large population of middle-aged individuals and investigate features of sexual dimorphism.

Materials And Methods: Facial profile photographs of 1776 individuals (964 females and 812 males; 46 years old), members of the Northern Finland Birth Cohort 1966 (NFBC1966), were uploaded and digitized with Viewbox software. Profile shape was defined with 47 landmarks (4 fixed and 43 sliding semi-landmarks).

Incisor Occlusion Affects Profile Shape Variation in Middle-Aged Adults.

Background: The aim of this study was to assess the effect of overjet and overbite on profile shape in middle-aged individuals.

Methods: The study population comprised 1754 46-year-old individuals, members of the 1966 Northern Finland Birth Cohort. Their profile images were digitized using 48 landmarks and semi-landmarks.

Orofacial Esthetic Scale and Psychosocial Impact of Dental Aesthetics Questionnaire: development and psychometric properties of the Finnish version.

Objective: To develop the Finnish version of the Orofacial Esthetic Scale (OES-Fi) and the Psychosocial Impact of Dental Aesthetics Questionnaire (PIDAQ-Fi) and estimate the psychometric properties of these instruments applied to adult Finns.

Methods: The English versions of the instruments were translated into Finnish and back-translated. Thereafter, OES-Fi and PIDAQ-Fi were established in a pilot study.

Occlusal characteristics in facial pain cases and controls - 12-year follow-up of the Northern Finland Birth Cohort (NFBC) 1966.

: The purpose of this study was to investigate the occlusal characteristics in Finnish adults at 12-year follow-up based on the Northern Finland Birth Cohort 1966 (NFBC1966) subjects.: The occlusal analyses were performed at ages 34 and 46 years of facial pain cases (n = 52) and controls (n = 49) by two different methods.: At 12-year follow-up, a significant decrease in upper anterior segment peer assessment rating (PAR) score was found in the controls, indicating improvement in teeth alignment.

Gender-specific associations of malocclusion traits with oral health-related quality of life in a Finnish adult population.

Aim: The aim of this cross-sectional study was to investigate gender-specific associations of different malocclusion traits with oral health-related quality of life (OHRQoL) among Finnish adults.

Material And Methods: The study material comprised 1885 subjects from the Northern Finland Birth Cohort 1966. A clinical oral examination including registration of occlusion was carried out in connection with a 46-year follow-up examination.

Association of facial sagittal and vertical characteristics with facial aesthetics in the Northern Finland Birth Cohort 1966.

Objective: To explore the association of facial sagittal and vertical dimensions with aesthetic assessment by three panel groups.

Materials And Methods: The study population comprised adult individuals from the Northern Finland Birth Cohort 1966 (NFBC1966). A clinical oral examination including digital facial photographs was performed.

Do changes in oral health-related quality-of-life, facial pain and temporomandibular disorders correlate after treatment of severe malocclusion?

Introduction: The aim was to evaluate the relationships of changes in facial pain, temporomandibular disorders (TMDs) and oral health-related quality-of-life (OHRQoL) in adults who underwent orthodontic or orthodontic/surgical treatment.

Methods: Sixty-four patients (46 women, 18 men, range 18-64 years) with severe malocclusion and functional problems were treated in Oulu University Hospital. Of these, 44 underwent orthodontic-surgical and 20 orthodontic treatment.

Dental esthetics and quality of life in adults with severe malocclusion before and after treatment.

Objective: To investigate the association between satisfaction with dental esthetics and quality of life, and esthetics satisfaction in relation to esthetic evaluations of three panel groups.

Materials And Methods: Fifty-two patients (36 women, 16 men; age 18-61 years) with severe malocclusion were treated in Oulu University Hospital. Of these, 38 and 14 patients underwent orthodontic/surgical treatment and orthodontic treatment, respectively.

Pathways between temporomandibular disorders, occlusal characteristics, facial pain, and oral health-related quality of life among patients with severe malocclusion.

The aim of this study was to examine the pathways between temporomandibular disorders (TMDs), occlusal characteristics, facial pain, and oral health-related quality of life in patients with severe malocclusion. The study comprised 94 (34 men and 60 women, mean age 38 years) adult patients who were referred for orthodontic or surgical-orthodontic treatment. All the patients had severe malocclusion.