# Validated Questionnaire on Intraoral Scanner Effectiveness in Paediatric Patients
## 2 Materials and Methods
The questions, reported in full in second table in Section 3, focus on the issues of awareness, communication, understanding in relation to the binomial dentist-parents and the liking in relation to the child. Using descriptive statistics, dichotomous responses (no/yes) were reported as absolute frequencies and percentages; the responses based on the scale of ten values (from 0 to 10) indicating the intensity of the phenomenon investigated were reported as mean values and relative standard deviations. The internal consistency of the questionnaire was assessed through Cronbach's alpha, which reflects the extent to which questionnaire items are related or whether they are consistent in measuring the same construct. Alpha values \(<\) 0.5 are indicative of unreliability; \begin{table}
\begin{tabular}{l l} \hline \hline
**Inclusion Criteria** & **Exclusion Criteria** \\ \hline Ages between 6 and 12 years & Critical issues in understanding the Italian language \\ \hline Any state of dental health & Patients psychologically–intellectually unable to answer \\  & the questions in the questionnaire \\ \hline  & Uncooperative patients \\ \hline  & Informed consent not accepted \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Study inclusion and exclusion criteria. values 0.5 \(\leq\) alpha < 0.6 indicate poor internal consistency, while values 0.6 \(\leq\) alpha < 0.7 indicate uncertain reliability. To have good internal consistency, a Cronbach's alpha between 0.7 and 0.8 is required, while alpha values between 0.8 and 0.9 and >0.9 indicate good or very good reliability, respectively. **We recommend you to answer with a tick ( x ) and in case of error fix it visibly, Thanks. **  
**How much this aspects have improved? **  
**0** = For nothing 1-3 = a little 4-5 = moderately 6-8 = a lot 9-10 = greatly  
**FOR THE PARENTS**  
1. **Have you ever seen the use of the intraoral scanner? **  
Yes No
2. **Do you think the scanner is a valid tool for the communication between the Medic and the patient? **  
0 1 2 3 4 5 6 7 8 9 10
3. **Do you think it's better than classic dental impressions? **  
Yes No
4. **How much better is your child's dental health awareness thanks to the scanner? **  
0 1 2 3 4 5 6 7 8 9 10
5. **Do you think the scanner is a valid tool for the first visit to the dentist? **  
0 1 2 3 4 5 6 7 8 9 10
6. **Do you think this new tool can improve the relationship between the kid and the dentist. **  
Yes No. **Figure 1.** \(Cont.\)7. **During the use of the scanner did you notice fatigue in your child? ** Yes **No. **
8. **During the use of the scanner did you notice discomfort in your child? Has the child ever expressed the desire to interrupt the visit? If the the answer is \"Yes\" do you think it is due to the use of the scanner? ** Yes **No. **
9. **Did the visualization of the digital reconstruction of your son's mouth help to improve the understanding of therapeutic indications? **  
0 1 2 3 4 5 6 7 8 9 10
10. At the end of the visit do you notice that your child is more attentive to the doctor's instructions in comparison with the use of classic dental impressions? **  
0 1 2 3 4 5 6 7 8 9 10
11. **In the future, knowing that we will use this method, will you feel more comfortable taking your child to the denti? **  
0 1 2 3 4 5 6 7 8 9 10  
FOR THE YOUNG PATIENT  
1. **How did you enjoy making the video of teeth from 1 to 10** 0 1 2 3 4 5 6 7 8 9 10
2. **Did it bother you the tool we used for the video of your teeth? ** Yes **No**
3. **Did you get tired during the video? ** Yes **No**
4. **How did you enjoy watching your mouth on the screen? **  
0 1 2 3 4 5 6 7 8 9 10
5. **After the video of the teeth, did you understand the advice of the dentist? ** Yes **No. **
6. **In the future would you like to reuse the same tool? ** Yes **No. **