## 5 Conclusions  
This study aimed to evaluate the combined effect of processing techniques (compression and injection molding) and posterior tooth forms (semi-anatomic and non-anatomic) on linear dimension changes (horizontal and vertical dimensions) in denture tooth positions following processing. Within the limitations of the study, the following conclusions can be drawn:  
* In relation to dimensional changes, there was a significant interaction between the components, i.e., the posterior tooth forms and the processing technique applied.
* The injection molding technique showed smaller tooth movements in both the vertical and horizontal measurements as compared to the conventional compression molding technique.
* Non-anatomic teeth show fewer changes in tooth movement as compared to semi-anatomic teeth in both the compression and injection molding techniques.
* The changes in the position of the molar were highest in the horizontal dimension as compared to other dimensions tested for all the groups, when semi-anatomic teeth were processed using the conventional molding technique.
* The smallest differences were observed in the non-anatomic group, when the injection processing technique was used.  
The clinical guideline that can be drawn from this research is that, when non-anatomic teeth are selected for complete dentures, any denture processing technique can be selected, as both cause minimal teeth movement. However, when semi-anatomic teeth are selected, an injection molding processing technique should be preferred to keep tooth movements to a minimum.  
**Supplementary Materials:** The following supporting information can be downloaded at: [[https://www.mdpi.com/article/10.3390/app12147058/s1](https://www.mdpi.com/article/10.3390/app12147058/s1)]([https://www.mdpi.com/article/10.3390/app12147058/s1](https://www.mdpi.com/article/10.3390/app12147058/s1)), Table S1: Shapiro Wilk Normality test used to check the normality of data without taking into account the absolute value of differences. Table S2: Shapiro Wilk Normality test used to check the normality of data after absolute value of differences was taken into account.  
**Author Contributions:** Conceptualization, M.E.S., A.P. and S.J.; methodology, M.E.S., A.P., S.J., A.H.A.H., R.A.Z., S.M.M.Z. and S.I.N.; software, A.H.A. and N.M.A.; validation, M.E.S., A.P., S.J., F.H.A. and S.S.A.; formal analysis, M.E.S., A.P., S.J., A.H.A.H., R.A.Z., S.M.M.Z. and S.I.N.; investigation, M.E.S., A.P., S.J., A.H.A.H., R.A.Z., S.M.M.Z. and S.I.N.; resources, F.H.A., A.H.A., N.M.A., H.A., S.M.A. and S.S.A.; data curation, M.E.S., A.P. and S.J.; writing--original draft preparation, M.E.S., A.P. and S.J.; writing--review and editing, M.E.S., A.P., S.J., A.H.A.H., R.A.Z., S.M.M.Z., S.I.N., F.H.A., A.H.A., N.M.A., H.A., S.M.A. and S.S.A.; visualization, F.H.A., A.H.A., N.M.A., H.A., S.M.A. and S.S.A.; supervision, M.E.S., A.P. and S.J.; project administration, M.E.S., A.P., H.A., S.M.A., A.H.A.H., R.A.Z., S.M.M.Z., S.I.N. and S.J.; funding acquisition, F.H.A., A.H.A., N.M.A., H.A., S.M.A. and S.S.A. All authors have read and agreed to the published version of the manuscript.  
**Funding:** This research received no external funding.  
**Institutional Review Board Statement:** The research protocol was approved by the research board at the College of Dentistry, Jazan University (Reference number: CODJU-2003J).  
**Informed Consent Statement:** Not applicable.  
**Data Availability Statement:** The data that support the findings of this study are available from the corresponding author upon reasonable request.  
**Acknowledgments:** Authors would like to thank [PERSON] and [PERSON] for their assistance with the manuscript review process.  
**Conflicts of Interest:** The authors declare no conflict of interest.