Craniofacial characteristics in Van der Woude syndrome.

AIM: To describe the particular craniofacial characteristics of Van der Woude syndrome(VWS) patients compared to patients with a non-syndromic cleft (CG1) and to a malocclusive healthy population (CG2). MATERIAL AND METHODS: Retrospective case-control study. A sample of 110 matched-patients was recruited (VWS (n = 7), CG1 (n = 49), CG2 (n = 49)). Subsequently, 37 radiometric variables were analysed and the dental-skeletal ages were determined. The intra/inter-observer method errors were quantified. Descriptive statistics were computed, and different inferential analysis tests were used depending on the normality of the data (Chi-square test, Fisher's exact test, paired Student's T-test, Mann-Whitney U test) (p-value < 0.05). Pairwise comparisons were corrected by Bonferroni's criteria. RESULTS: VW-patients presented specific craniofacial characteristics and morphology. A marked tendency to the vertical growth pattern was found in VW-patients compared to CG1-CG2 (p < 0.001); at the sagittal level, skeletal class II caused by mandibular retrognathism, with a greatly increased ANB angle compared to CG1 (p = 0.042). Dental analysis showed that the lower incisor was more retruded and retroclined (p < 0.05 in all cases) and the interincisal angulation was increased (p < 0.001 (CG2)). At the profile level, an open nasolabial angle (p = 0.040; CG1) and a more protruding lower lip with respect to the Sn-Pg plane (p = 0.040 (CG1); p = 0.044 (CG2)) were observed. CONCLUSIONS: VW-patients present particular characteristics in the facial skeletal structures. There is a critical necessity to increase the evidence regarding specific clinical features and orofacial pathology of rare diseases such as VWS, which will help to these minorities to gain access in the future to a better quality of care with precise treatment and diagnostic necessities.

Scale of self-efficacy in oral hygiene (OHSE): analysis of psychometric properties in Spain.

AIM: Oral self-efficacy has been shown to be an important variable in predicting successful treatment, preventing health risks and encouraging health-promoting behaviour. In the context of oral health, it is of paramount importance to facilitate the use of the Oral Hygiene Self-Efficacy Scale (OHSE) in clinical practice. The aim of this study was to analyze the psychometric properties of the OHSE scale in a sample of Spanish adults and offer standards for interpreting the scale. METHOD: A sample of 360 people aged from 18 to 75 years was assessed using the OHSE scale. The scale was culturally adapted and translated, reliability tests, construct validity, comparison of means by sex and age group were carried out, and scales for evaluating the responses were prepared. RESULTS: After eliminating six items, the reliability and validity analyses showed adequate psychometric properties. There were no differences between sex or age group. CONCLUSION: The OHSE scale for a Spanish adult population has sufficient empirical support to be considered a valid and useful instrument with solid psychometric properties and it offers an opportunity for oral health education intervention programs aimed at the adult population.

Adaptation of the Quality of Life Adolescent Cleft Questionnaire for Spanish children and adolescents with cleft lip and/or palate.

BACKGROUND: The Quality of Life Adolescent Cleft Questionnaire is a measure of quality of life in cleft lip/palate (CL/P) and includes items on pre-treatment and post-treatment status. Items, however, were originally organized in a factor structure that prevents a formal pre-treatment to post-treatment comparison. Additionally, the questionnaire was tested in older patients. AIM: We aimed to explore a factor structure that allows a comparison of pre- to post-treatment status in children and adolescents with CL/P. DESIGN: The sample comprised 60 children and adolescents with CL/P. The scale was divided into two groups of items (24 comparing pre-treatment and post-treatment status and 26 measuring current quality of life). Two different exploratory and confirmatory analyses were conducted (one for each group of items). Sources of criterion validity were investigated with measures of self-esteem and self-efficacy. RESULTS: The results supported a 6-factor structure for the pre-treatment and post-treatment items. In the second group of items, 9 items were removed due to inadequate functioning and a final 4-factor solution was obtained. The criterion validity of factors was good. CONCLUSION: The proposed factor solution might be more useful to detect the perceived satisfaction in different areas and can be used in younger patients.

Lockdown impact on lifestyle and its association with oral parafunctional habits and bruxism in a Spanish adolescent population.

AIM: To analyse the possible association between decreased physical and social activity and an increase in the use of mobile devices, internet, and social networks with increased anxiety and the appearance of oral parafunctions and bruxism for adolescents before and during COVID-19. DESIGN: A total of 213 adolescents attended private clinics at two different times: before lockdown (T0) and after completion of total lockdown (T1). In T0 and T1, a clinical examination was carried out to assess dental wear (IA) and only in T1 were they given the self-report questionnaire which focuses on the periods before and during lockdown (self-reported bruxism, state anxiety, mobile phone and internet, social network use, physical and social activity, and questions on parafunctions). RESULTS: There were a decrease in physical activity at T0-T1 and an increase in social media use, internet, state anxiety, and clinical and self-reported bruxism at T0-T1. There was a positive correlation between increased self-reported bruxism, increased social media use, mobile device use, and state anxiety. CONCLUSIONS: There has been a change in adolescent lifestyle during lockdown with an increase in the prevalence of oral parafunctions and bruxism. In particular, the increase in the use of social networks at night and also in anxiety levels during lockdown were associated with of the increase in self-reported bruxism.

The impact of co-sleeping less than 6 months on children's anxiety, oral habits, and malocclusion in a Spanish sample between 2 and 5 years old: a cross-sectional study.

OBJECTIVES: Families often use co-sleeping to mitigate potential physiological and emotional effects on infants. The purpose of this study was to investigate whether the early termination of co-sleeping is associated with high levels of anxiety, non-nutritive sucking habits for self-comfort, and increased malocclusion. METHODS: A cross-sectional study was performed on the parents of 215 children [aged 2-5 years (3.94 ± 0.89)], who were divided according to the duration of co-sleeping (≤6 months or >6 months). The parents completed a questionnaire about co-sleeping, sucking, breastfeeding habits, and anxiety. Finally, a clinical examination was carried out to diagnose malocclusion according to the World Health Organization (WHO) index, and the aesthetic component of the Index of Orthodontic Treatment Need (IOTN-AC) was recorded. RESULTS: Children that co-slept for 6 months or less had an increased incidence of pacifier use (P < 0.05), finger sucking (P < 0.01), and atypical swallowing (P < 0.05). Lower anxiety levels were found in the group with a longer duration of co-sleeping (P < 0.01). In the assessment of malocclusions, the group that co-slept for ≤6 months had higher IOTN scores (P < 0.01) and WHO indices (P < 0.05); in addition, there were differences in anterior open bite (P < 0.05), posterior crossbite (P < 0.01), skeletal Class II (P < 0.01), canine Class II (P < 0.05), and overjet (P < 0.05). CONCLUSION: A co-sleeping duration of >6 months appears to be a protective factor associated with less anxiety, fewer negative sucking habits, and a decreased incidence of malocclusions in co-sleeping children.

Anxiety and facial self-contacts: possible impact on COVID-19 transmission in dental practice.

BACKGROUND: The purpose was to analyse the associations between dental and trait anxiety, fear of COVID-19 and the duration and frequency of spontaneous hand-to-face contact (self-contact). METHODS: A cross-sectional design was carried out with 128 adult patients from four dental clinics in Madrid, during the confinement, from March 15 to May 15. The patients' movements in the waiting room were monitored with Microsoft Kinect Software, also completed the Trait anxiety subscale of the STAI, the COVID-19 Fear and the S-DAI questionnaire. RESULTS: Associations were observed between the duration and frequency of facial, mask and eye contact with trait anxiety and dental fear was determined only by the frequency of this self-contact. Trait anxiety is associated with dental anxiety and with fear of COVID-19. Although facial self-contact is higher in women, it also rises in men as dental fear increases. Moreover, dental anxiety is a good predictor of trait anxiety and the incidence of facial self-contact. CONCLUSIONS: Understanding the possible associations between biopsychosocial factors, such as trait anxiety, dental anxiety and self-contact is important. It may help to prevent the spread of COVID-19 in the population as well as enabling the formulation of effective interventions to improve oral health care through the implementation of dental care programmes.

Oral hygiene habits and possible transmission of COVID-19 among cohabitants.

BACKGROUND: To find out whether misuse of dental hygiene, in terms of certain dental habits, may facilitate the spread of COVID-19 among cohabiting individuals. METHODS: 302 COVID-19 infected (PCR +) subjects cohabiting with someone else at home were selected for an observational cross-sectional study. An anonymous online questionnaire was developed using Google forms to avoid person-to-person contact. The structured questionnaire consisted of questions covering several areas: sociodemographic data, cross transmission to another person living together, oral hygiene habits during confinement, care and disinfection control behaviours in the dental environment like sharing toothbrush, sharing toothbrush container, sharing toothpaste, placing brush vertically, placing cap with hole for brush, disinfecting brush with bleach, closing toilet lid before flushing. RESULTS: Tongue brushing was more used in the group where there was no transmission of the disease to other members (p < 0.05). Significant differences were found for shared toothbrush use (p < 0.05), although shared use was a minority in this group (4. 7%), significant differences were also found for the use of the same container (p < 0.01), shared use of toothpaste (p < 0.01), toothbrush disinfection with bleach (p < 0.01), brush change after PCR + (p < 0.05). The women performed significantly more disinfection with toothbrush bleach (p < 0.01), closing the toilet lid (p < 0.05) and changing the brush after PCR + (p < 0.05). CONCLUSIONS: The use of inappropriate measures in the dental environment could contribute to the indirect transmission of COVID-19 between cohabitants.

Cephalometric landmark identification consistency between undergraduate dental students and orthodontic residents in 3-dimensional rendered cone-beam computed tomography images: A preliminary study.

INTRODUCTION: The aim of this study was to compare 3-dimensional landmark consistency and precision in skeletal structures in groups with different levels of experience with 2-dimensional cephalometrics. METHODS: Sixteen observers, all undergraduate or graduate students, were divided into 4 groups with different levels of experience in 2-dimensional landmarking and no previous experience in 3 dimensions. Group 1 consisted of 4 third-year dental students with no experience in cephalometric landmarking. Groups 2, 3, and 4 consisted of first-, second-, and third-year graduate students, with increasing levels of experience. The participants located 18 landmarks in 12 surface models of cone-beam computed tomography scans of patients on 3 separate occasions. The average of all examiners locating each landmark was defined as the centroid. The mean of the distances of each located point to the centroid of that landmark was used as the mean consistency (MC), and the standard deviation (SD) was used as the precision. Analysis of variance and post hoc Tukey comparisons between groups were done. RESULTS: The MC and SD values across landmarks, patients, and examiners were 1.03 ± 1.14 mm. The MC and SD were 0.89 ± 0.83 mm for group 1 with no experience, 1.02 ± 0.95 mm for group 2, 1.17 ± 1.60 mm for group 3, and 1.05 ± 1.00 mm for group 4. Significant differences were found among the groups. CONCLUSIONS: Comparing the observer groups studied, the undergraduate dental school students without previous experience in bidimensional cephalometrics obtained the best values in volumetric landmark location. Graduate students with increasing amounts of experience did not perform as well. These results and conclusions should be interpreted with caution because the number of subjects in each group was small.

Looking at the Mental Health of Children and Adolescents with Cleft Lip and/or Palate through Neuroticism and Emotional Regulation Strategies: A Case-Controlled Observational Study.

Background: Children and adolescents with cleft lip and/or palate (CL/P) are at an increased risk of developing emotional disorders. This study aims to explore this question in greater depth by addressing three objectives: (1) the presence of neuroticism as an indicator of emotional symptomatology, (2) the use of adaptive and non-adaptive emotional regulation strategies, and (3) the relationship between these strategies and neuroticism. Methods: A case-control correlational methodology was employed, with 60 children and adolescents with CL/P (mean age = 12.80 years; 33 females) and 60 non-clinical equivalent children and adolescents. Results: The CL/P group has higher scores on neuroticism (t = -7.74; p ≤ 0.001, d Cohen = 1.43) and lower scores in almost all emotional regulation strategies. The presence of CL/P moderated the relationship between neuroticism and self-blame (Beta = -0.46, t = -2.81, p = 0.005), rumination (Beta = -0.49, t = -3.73, p < 0.001), catastrophizing (Beta = -0.61, t = -4.26, p < 0.001), and blaming others (Beta = -0.45, t = -2.84, p = 0.005). This model predicted a significant variance of neuroticism (all p < 0.005), which ranged from 39% to 41%. Conclusions: The CL/P group has worse mental health indicators. Particularly novel results about the CL/P group are the lower scores on regulation strategies (both adaptive and non-adaptive) and the fact that non-adaptive strategies contribute, contrary to their effect in the general population, to a decrease in neuroticism. It supports the need to incorporate mental health indicators in the diagnosis and treatment of children and adolescents with CL/P.

Long-term effects of maxillary skeletal expander treatment on functional breathing.

Objective: : To investigate the long-term effects of maxillary skeletal expander (MSE) treatment on functional breathing. Objective: measures of breathing, the peak nasal inspiratory flow (PNIF), and peak oral inspiratory flow (POIF), and subjective measures of breathing, the visual analog scale (VAS) and nasal obstruction symptom evaluation (NOSE) survey, were used to investigate the long-term effects of MSE in functional breathing. Seventeen patients, mean age 19.4 ± 3.9 years treated at the UCLA Orthodontics Clinic were assessed on their functional breathing at 3 timepoints: pre-expansion (T0), post-expansion (T1), and post-orthodontic treatment (T2). Results: : Immediately after expansion (T1), all the objective functional breathing values were significantly increased in comparison to T0 (P < 0.05). The VAS total, VAS right and VAS left were significantly lower at T1 in comparison to T0 (P < 0.05). At 26.8 ± 3.9 months after MSE expansion (T2), PNIF total, PNIF right, PNIF left, and POIF were significantly higher when compared to T0 (P < 0.05). Also, VAS total, VAS right and VAS left were significantly lower at T2 when compared to T0 (P < 0.05). Additionally, there was a positive correlation between PNIF and the magnitude of expansion at anterior nasal spine and zygomaticomaxillary point (ZMA). There was a positive correlation between total VAS and the magnitude of expansion at the ZMA. There were no significant changes for the NOSE subjective breathing measurement at all time comparisons. Conclusions: : Overall, MSE treatment produces an increased objective and subjective airway improvement that continues to remain stable in the long-term post expansion.

Breathing changes following mini-implant-supported maxillary skeletal expander treatment in late adolescent or adult patients : Assessment of objective and subjective functional breathing changes.

PURPOSE: The aim of this study was to assess objective and subjective breathing changes in adult patients who underwent maxillary skeletal expansion with the mini-implant-supported maxillary skeletal expander (MSE). METHODS: Twenty-nine patients (mean age 18.1 ± 4.3 years) who underwent expansion using the MSE were compared pre- and posttreatment and with a control group (mean age 19.9 ± 2.6 years) to assess objective and subjective functional breathing changes. Objective measurements of the airway including peak nasal inspiratory flow (PNIF) and peak oral inspiratory flow (POIF) were measured utilizing the In-Check medical device (Clement Clarke, Harlow, United Kingdom). Patients reported subjective breathing assessment utilizing the visual analog scale (VAS). Intragroup comparisons were performed with Wilcoxon tests and intergroup comparison with Mann-Whitney U tests. Spearman correlation coefficients were calculated among the studied variables (P < 0.05). RESULTS: Following MSE treatment, there were significantly higher values for PNIF total (P < 0.0001), PNIF right (P < 0.0001), PNIF left (P < 0.0001), and POIF (P < 0.01) compared to pretreatment and control group results. Also, patients reported a significant decrease in troubled breathing as measured by the VAS for breathing through the right nostril (P < 0.01), left nostril (P < 0.001), and both nostrils (P < 0.01). Comparing the objective and subjective variables for both the pre-MSE or post-MSE groups, the results indicated no significant correlation between total PNIF and total VAS. However, the values had significant correlations between PNIF and VAS on each side when the patients were asked to block one nostril. CONCLUSIONS: Objective functional breathing measurements were increased immediately after treatment with MSE. Subjective functional breathing measurements changes were significantly higher after MSE treatment and compared with the control group. MSE presents a nonsurgical alternative to achieving orthopedic expansion in adult patients which may provide a benefit for patients with nasal airway obstruction.

The influence of gender on the relationship between dental anxiety and oral health-related emotional well-being.

BACKGROUND AND AIM. Children's dental fear and/or anxiety (DFA) has been associated with declines in oral health and quality of life. The influence of gender on the relationship between DFA and oral health-related well-being in children is analysed. DESIGN. The decayed, missing and filled permanent teeth (DMFT) index was obtained from 161 school-aged children (7-14 years old). Data from children's self-assessed oral health, oral health-related emotional well-being and dental anxiety were collected using questionnaires. RESULTS. Low scores of emotional well-being were associated with negative self-assessment of oral health and high levels of dental anxiety. Females reported decreased oral health-related emotional well-being compared with males. The analysis of possible moderating effects confirmed that gender influenced the relationship between oral health and DFA. The DMFT index was not associated with self-assessed oral health status, emotional well-being or DFA. CONCLUSION. For girls, high levels of DFA were associated with low levels of oral health-related emotional well-being. In contrast, dental fear and/or anxiety did not influence oral health-related emotional well-being in boys.

Eating Behaviours, Oral Hygiene, and Caries in a Population of Spanish Children with Divorced Parents: A Cross-Sectional Study.

Dental caries are a public health problem that is influenced by dietary habits. This cross-sectional study aimed to investigate the feeding and hygiene habits that divorced parents exercise over their children compared to non-divorced parents, and how this may influence the rate of caries in their children. The data of participants (n = 174) with an average age of 12.17 ± 2.04 years were examined to assess the mean decayed/missing/filled teeth (DMFT) index, and they were asked questions about their oral hygiene habits. At the same time, their parents answered the parental feeding style questionnaire. A moderation analysis was conducted with family control of oral hygiene habit levels as an independent variable, decayed teeth as a dependent variable, and feeding control as a moderating variable. Results showed that divorced parents were found to have more problems in controlling their children's hygiene and dietary habits, have less control over their children's feeding, and make more use of instrumental feeding, which led to children of divorced parents having more caries. Despite the limitations linked to the cross-sectional design of the study and considering both the convenience sample and the impossibility of controlling for all aetiological factors linked to the development of caries, it can be concluded that children of divorced parents have an increased risk of tooth decay. However, parental controlled feeding interferes with the effect of family controlled oral hygiene habits on the decayed tooth, decreasing the rate of caries.

Treatment experience, frequency of dental visits, and children's dental fear: a cognitive approach.

Cognitive elements play a key role in dental anxiety. Nevertheless, relatively little is known about how dental treatments and frequency of visits to the dentist are related to dental fear and its cognitive antecedents. This study aimed to explore the relationships between dental visits, past treatment experiences, expectations on the aversiveness/probability of negative dental events, and dental fear in children. The participants were 147 children (60% female; mean age = 12.0 yr) who completed a questionnaire comprising measures of dental treatment-related experience (attendance, fillings, and extractions), perceived aversiveness and probability of dental events, and dental anxiety. Bivariate correlations and multiple linear regression analyses were used to analyze the data. A higher frequency of dental visits was associated with less dental fear and a decreased belief in the probability of negative events occurring during treatment. The type of treatments received was not directly linked to dental fear. However, having received fillings was significantly associated with the perceived probability of negative dental events, whereas extractions were positively associated with these expectations but negatively associated with the perceived aversiveness of possible dental events. Regular dental visits, as well as dental treatments, can influence, in different ways, cognitive elements associated with dental anxiety in children.

Assessing the relative efficacy of cognitive and non-cognitive factors as predictors of dental anxiety.

Although previous research has successfully tested the usefulness of cognitive and non-cognitive factors to predict dental anxiety, they have rarely been jointly analysed. This study therefore aimed to compare the relative predictive power of a set of cognitive and non-cognitive factors in accounting for dental anxiety scores. A sample of 167 Spanish undergraduate students (81.4% women; mean age 21.2 yr) completed a questionnaire comprising measures of dental anxiety, non-cognitive antecedents of dental anxiety (i.e. past aversive dental experiences, exposure to dentally fearful relatives, and trait-based negative mood), and cognitive variables (i.e. dental-related cognitive vulnerability, probability/aversiveness expectancies, and dental cognitions and beliefs). In multiple linear regression analyses, cognitions were found to significantly increase the proportion of variance accounted for in dental fear scores (ΔR(2) = 0.15, maximum ΔR(2) = 0.35). Cognitive factors were found to be the best individual predictors of dental fear (ß-values ranging from 0.23-0.66). Furthermore, scores for past aversive treatment experiences and negative mood were not significant predictors of scores for dental anxiety when cognitive variables were included in the models. The analysis of cognitive mechanisms involved in dental anxiety is revealed as a potentially important point in better understanding this problem.

Emotional contagion of dental fear to children: the fathers' mediating role in parental transfer of fear.

BACKGROUND: Dental fear is considered to be one of the most frequent problems in paediatric dentistry. According to literature, parents' levels of dental fear play a key role in the development of child's dental anxiety. HYPOTHESIS OR AIM: We have tried to identify the presence of emotional transmission of dental fear among family members and to analyse the different roles that mothers and fathers might play concerning the contagion of dental fear to children. We have hypothesized a key role of the father in the transfer of dental fear from mother to child. DESIGN: A questionnaire-based survey (Children's Fear Survey Schedule-Dental Subscale) has been distributed among 183 schoolchildren and their parents in Madrid (Spain). Inferential statistical analyses, i.e. correlation and hierarchical multiple regression, were carried out and possible mediating effects between variables have been tested. RESULTS: Our results support the hypothesis that family members' levels of dental fear are significantly correlated, and they also allow us to affirm that fathers' dental fear is a mediating variable in the relationship between mothers and children's fear scores. CONCLUSIONS: Together with the presence of emotional transmission of dental fear among family members, we identified the relevant role that fathers play as regards the transfer of dental fear from parents to children.

Visual perception of skeletal class and biotype in Spain.

The aim of this study was to determine and compare the visual accuracy of students and experienced orthodontists in distinguishing the different skeletal classes and facial biotypes using only lateral photographs. A group of 19 orthodontic students (4 males and 15 females, aged between 23 and 30 years) and 9 experienced orthodontists (three males and six females, aged between 30 and 56 years) were shown a slide presentation of 100 (50 males and 50 females) patients aged between 8 and 42 years and were asked to indicate the skeletal class and the facial biotype of each subject. Data were analysed using a one-way repeated measures analysis of variance, with Bonferroni post hoc adjustment for multiple testing. P-values less than 0.05 were considered statistically significant. Only 32.75 per cent of the participants identified the facial biotype of the patients with respect to Rickett's vertical (Vert) pattern and 47.96 per cent the skeletal class. The students performed better than the experienced orthodontists (P < 0.05) but only for skeletal class. The results indicate that lateral photographs are not sufficient for determining the skeletal class or facial biotype of patients.

The perception of facial aesthetics in a young Spanish population.

Improved facial aesthetics is one aim of orthodontic treatment. This study was designed to determine if the faces considered more beautiful in a young population exhibit the same parameters used by orthodontists to assess successful results. A panel of 34 laypeople (30 females and 4 males) evaluated a set containing one frontal, one frontal during smiling, and one profile photograph of 89 students (77 females and 12 males) on a 5-point attractiveness scale, in relation to a set of reference photographs. For each photographic set, the mean and final scores were calculated. Once the sample was established, 11 subjects (9 females and 2 males) with the highest final facial aesthetic score were selected and cephalometric analysis was performed. All cephalometric measurements were within the norm for the total sample. When the sample was divided by gender, Wilcoxon's W non-parametric test showed significant differences between the male and female photographs; while females tended to a Class II malocclusion, with the mandible slightly retrusive to the maxilla, males tended to a Class III and showed a straighter profile with a prominent chin; the face height ratio was higher in males. There were no significant differences between genders for lower lip to E plane. The findings show that the faces considered more attractive fulfilled the cephalometric and facial norms.

Tongue and lip frenectomy in Spanish medical texts of the 16th-18th centuries.

The frena of the tongue and lip are normal structures of the buccal cavity, and surgical resection is only necessary in cases of hypertrophy. This article looks at medical texts of the Early Modern Era to analyze the origins and quality of our knowledge on this topic and examine any therapeutic measures proposed. This review shows that while the indications for carrying out tongue frenectomy are very similar to those today (speech and breastfeeding difficulties), those for carrying out a lip frenectomy are very different. Interestingly, apart from purely surgical or medicinal treatments, some authors indicated the need to complement such treatment with educational intervention and what can only be called basic speech therapy.

Co-Sleeping as a Protector against Malocclusion in the Primary Dentition: A Cross-Sectional Study.

Mothers practice co-sleeping and breastfeeding simultaneously, for convenience and to strengthen bonding. Due to the scarcity of studies analyzing the impact of co-sleeping on primary dentition, this study aimed to analyze the possible effects of co-sleeping on children's occlusion. In this cross-sectional study, mothers of 221 children aged 2−5 years who had been breastfed for less than 6 months completed a questionnaire about non-nutritive sucking habits. The WHO (World Health Organization) and IOTN-AC indices (the Aesthetic Component of the Index of Orthodontic Treatment Need) were used to assess malocclusion. The type of sagittal (dental and skeletal), transverse and vertical malocclusion was recorded. The non-co-sleeping group showed significantly higher pacifier use (p < 0.05), digital sucking (p < 0.05) and atypical swallowing (p < 0.05) habits. The non-co-sleeping group showed significantly higher mean scores on the IOTN-AC (p < 0.05) and WHO (p < 0.01), a significantly higher presence of canine class II (p < 0.05), anterior open bite (p < 0.05), posterior crossbite (p < 0.05), overbite (p < 0.05), skeletal class II (p < 0.01) and protrusion (p < 0.05). In conclusion, children who practice co-sleeping appear to have a lower frequency and duration of non-nutritive sucking habits. Co-sleeping may contribute to a lower development of malocclusions in children who are weaned early (before six months of age).