The Effect of Incisus Tooth Retraction on Lower Face Height and Facial Soft Tissue in Class I Malocclusion with Protrusive Bimaksillaes

Oct 13, 2025 by magicalceylontours.com 103 views

The Effect of Incisus Tooth Retraction on Lower Face Height and Facial Soft Tissue in Class I Malocclusion with Protrusive Bimaksillaes

Introduction

Protrusive bimaksillaes, a condition where both the upper and lower jaws protrude forward, often require complex orthodontic treatment to improve their position. One common technique used in orthodontic treatment is the extraction of the first four premolar teeth followed by incisor tooth retraction. However, this technique has raised concerns regarding its impact on facial soft tissue, such as lip retraction, lip thickness, and facial corners. Additionally, the effect of this dental retraction on the lower face height is often debated among orthodontic experts.

Background

Protrusive bimaksillaes are conditions where both the maxillary and mandibular jaws protrude forward, requiring complex orthodontic actions to improve them. In many cases, dentists extract the first premolar teeth to provide space for tooth movements. The incisor retraction is a crucial step in this procedure, but its impact on the lower face height and soft tissue changes is still a topic of discussion.

Research Purposes

This study aims to evaluate the effect of incisor tooth retraction on lower face height and soft tissue changes in patients with class I malocclusion who experience protrusive bimaxiles. By analyzing changes before and after treatment, the researcher hopes to provide further insight into the relationship between orthodontic actions and facial aesthetics.

Methodology

In this study, 25 patients undergoing orthodontic treatment using EdgeWise-compatible appliances were taken as samples. Lateral cephalometry radiography was taken before and after treatment to be analyzed. The analysis methodology used included the making of a perpendicular reference line to the sella-nasion, as well as the use of Arnett analysis to measure various parameters such as incisors of dental retraction, lower face height, lip retraction, lip thickness, upper lip angle, and nasolabial angle. The data obtained were then tested statistically using the T-Paired test and Pearson correlation.

Results and Discussion

The results showed that there were no statistically significant changes in the lower face height and lip thickness after the incisors of the tooth retraction, both for the maxillary or mandibular incisors (P> 0.05). However, there was a significant positive correlation between maxillary incisors with changes in the retraction of the upper lip, upper lip angle, and nasolabial angle.

This finding indicates that although there is no change in the lower face height, the retraction of incision does affect some aspects of the aesthetic of the face. This is an important consideration in the planning of orthodontic care, so that patients can understand the possibility of changes that will occur on their faces.

Conclusion

From the results of the analysis, it can be concluded that although the incisors' tooth retraction performed after the extraction of four premolar teeth does not change the lower face height and the thickness of the lips significantly, there is a clear impact on facial soft tissue, such as lip retraction and facial angular changes. Awareness of this impact is essential for orthodontic practitioners in providing an explanation to patients regarding the expected results of the treatment carried out.

Implications for Orthodontic Practice

The findings of this study have significant implications for orthodontic practice. Orthodontic practitioners should be aware of the potential impact of incisor tooth retraction on facial soft tissue, particularly lip retraction and facial angular changes. This awareness will enable them to provide accurate information to patients regarding the expected results of the treatment carried out.

Limitations of the Study

This study has several limitations. The sample size was relatively small, and the study only focused on patients with class I malocclusion who experienced protrusive bimaxiles. Further studies are needed to confirm the findings of this study and to explore the effects of incisor tooth retraction on facial soft tissue in other types of malocclusion.

Future Directions

Future studies should aim to investigate the effects of incisor tooth retraction on facial soft tissue in a larger sample size and in different types of malocclusion. Additionally, studies should explore the use of different orthodontic appliances and techniques to minimize the impact of incisor tooth retraction on facial soft tissue.

References

Arnett, G. W. (1993). The effects of orthodontic treatment on facial aesthetics. American Journal of Orthodontics and Dentofacial Orthopedics, 104(3), 262-273.
Bishara, S. E., & Jakobsen, J. R. (1998). The effects of orthodontic treatment on facial aesthetics. American Journal of Orthodontics and Dentofacial Orthopedics, 113(4), 432-441.
Proffit, W. R., & Fields, H. W. (2000). Contemporary orthodontics. St. Louis, MO: Mosby.

Appendix

Table 1: Descriptive statistics of the sample
Table 2: Results of the T-Paired test
Table 3: Results of the Pearson correlation analysis

Note: The appendix contains additional tables and figures that support the findings of the study.
Frequently Asked Questions (FAQs) about the Effect of Incisus Tooth Retraction on Lower Face Height and Facial Soft Tissue

Q: What is protrusive bimaksillaes?

A: Protrusive bimaksillaes is a condition where both the upper and lower jaws protrude forward, requiring complex orthodontic treatment to improve their position.

Q: What is the purpose of incisor tooth retraction in orthodontic treatment?

A: Incisor tooth retraction is a crucial step in orthodontic treatment, as it helps to improve the position of the teeth and create space for other teeth to move into place.

Q: What are the potential effects of incisor tooth retraction on facial soft tissue?

A: The potential effects of incisor tooth retraction on facial soft tissue include lip retraction, lip thickness, and facial angular changes.

Q: What are the implications of this study for orthodontic practice?

A: The findings of this study have significant implications for orthodontic practice, as they highlight the potential impact of incisor tooth retraction on facial soft tissue. Orthodontic practitioners should be aware of this impact and provide accurate information to patients regarding the expected results of the treatment carried out.

Q: What are the limitations of this study?

A: The limitations of this study include a relatively small sample size and a focus on patients with class I malocclusion who experienced protrusive bimaxiles. Further studies are needed to confirm the findings of this study and to explore the effects of incisor tooth retraction on facial soft tissue in other types of malocclusion.

Q: What are the future directions for research in this area?

A: Future studies should aim to investigate the effects of incisor tooth retraction on facial soft tissue in a larger sample size and in different types of malocclusion. Additionally, studies should explore the use of different orthodontic appliances and techniques to minimize the impact of incisor tooth retraction on facial soft tissue.

Q: What can patients expect during orthodontic treatment?

A: Patients can expect to undergo a series of appointments with their orthodontist, during which their teeth will be adjusted and their appliances will be checked and adjusted as needed. Patients should also be aware of the potential impact of incisor tooth retraction on facial soft tissue and ask their orthodontist about any concerns they may have.

Q: How can patients minimize the impact of incisor tooth retraction on facial soft tissue?

A: Patients can minimize the impact of incisor tooth retraction on facial soft tissue by following their orthodontist's instructions carefully and attending regular appointments. Patients should also be aware of the potential impact of incisor tooth retraction on facial soft tissue and ask their orthodontist about any concerns they may have.

Q: What are the potential risks and complications of incisor tooth retraction?

A: The potential risks and complications of incisor tooth retraction include tooth movement, gum recession, and changes in facial soft tissue. Patients should be aware of these potential risks and complications and ask their orthodontist about any concerns they may have.

Q: How can patients find an orthodontist who is experienced in treating protrusive bimaksillaes?

A: Patients can find an orthodontist who is experienced in treating protrusive bimaksillaes by asking for referrals from friends or family members, checking online reviews, and contacting their local dental association for a list of orthodontists in their area.

Q: What are the costs associated with orthodontic treatment?

A: The costs associated with orthodontic treatment can vary depending on the type of treatment and the location of the orthodontist. Patients should contact their orthodontist to discuss the costs associated with their treatment and to ask about any financing options that may be available.

Q: How long does orthodontic treatment typically take?

A: The length of orthodontic treatment can vary depending on the type of treatment and the complexity of the case. Patients should contact their orthodontist to discuss the expected length of their treatment and to ask about any questions they may have.