Удаление премоляров, ВНЧС - список статей
Dec. 29th, 2024 11:41 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
healthy_back К сожалению, все статьи - на английском в PDF, и у меня нет возможности сейчас всё переводить и перепощивать с картинками. Я просто сохраняю ссылки и где всё это потом можно найти.
Оригинал у Карин - оглавление: https://drive.google.com/drive/folders/1ZwLTkWNibO6aSgDJMRHTCKWPeN_3nptq
1) https://disk.yandex.ru/i/GfseERyOj_XTjA (https://t.me/CFS_UARS_TMJD_Ortho_Surgeries/211)
2) https://disk.yandex.ru/i/_0SeZvt2GV25JA (https://t.me/CFS_UARS_TMJD_Ortho_Surgeries/212)
3) https://disk.yandex.ru/i/O20jkGvQyde7bQ (https://t.me/CFS_UARS_TMJD_Ortho_Surgeries/213)
4) https://disk.yandex.ru/i/N4KfPBlOxusFjw (https://t.me/CFS_UARS_TMJD_Ortho_Surgeries/214)
5) https://disk.yandex.ru/i/bwrXTcQrw1tz5g (https://t.me/CFS_UARS_TMJD_Ortho_Surgeries/215)
6) https://disk.yandex.ru/i/9rA7OCu2g52aDw (https://t.me/CFS_UARS_TMJD_Ortho_Surgeries/216)
7) https://disk.yandex.ru/i/Y8uVqRKpq0Ifqw (https://t.me/CFS_UARS_TMJD_Ortho_Surgeries/217)
https://www.ajodo.org/article/0889-5406(92)70076-M/abstract Orthodontic risk factors for temporomandibular disorders (TMD). I: Premolar extractions
DDS, MS Charles R. Kremenaka ∙ DDS, MS D. David Kinserc ∙ DDS, MS Heidi A. Harmand ∙ DDS, MS Curtis C. Menarde ∙ BS, MA Jane R. Jakobsen
The research paper they probably presented was a 1992 study published in the AJO-DO. The 1992 journal has several publications that had been commissioned by the American Association of Orthodontists to protect themselves from lawsuits, after the 1.3 million dollar lawsuit from 19 year old Susan Brimm, who had severe TMD from extraction/retraction (PER). If you read these journal articles, they are absurd. They say that occlusion has nothing to do with the jaw joints hence no connection to TMD. TO combat them, you could collect articles on Bruxism and TMD which prove the correlation between....occlusion and TMD. There is also Witzig's 1960 article on TMD and premolar extractions. There is also the 2023 research article published in a high impact journal establishing that PER causes changes in mandibular kinematics and position and 'Is a risk for TMD."
Продолжение поста Список ссылок https://healthy-back.livejournal.com/477635.html (https://healthy-back.dreamwidth.org/461539.html)
172) https://pmc.ncbi.nlm.nih.gov/articles/PMC3770235/
Saudi Dent J. 2011 Jan 28;23(2):55–59. doi: 10.1016/j.sdentj.2011.01.003
Adverse effects of orthodontic treatment: A clinical perspective
Nabeel F Talic 1,⁎ PMCID: PMC3770235 PMID: 24151415
173) https://pubmed.ncbi.nlm.nih.gov/30664820/
J Oral Rehabil. 2019 Apr;46(4):388-397. doi: 10.1111/joor.12767. Epub 2019 Feb 10.
Dental occlusion and body balance: A question of environmental constraints?
Sonia Julià-Sánchez 1 , Jesús Álvarez-Herms 1 , Martin Burtscher 2 Affiliations PMID: 30664820 DOI: 10.1111/joor.12767
174) https://tmjsleepandbreathecenter.com/why-not-to-remove-teeth-for-braces/ Extraction Retraction Regret Syndrome: Truth about teeth removal for braces by Gary Adams DDS
175) https://pmc.ncbi.nlm.nih.gov/articles/PMC3989577/
"This issue has been noted by many researchers in academic dental training centers worldwide. The results of many studies in this field have shown surprisingly high prevalence rates of TMJ injuries (50-63 %) after extracting mandibular teeth by dental students".
176) https://healthy-back.livejournal.com/485458.html (https://healthy-back.dreamwidth.org/468470.html)
177) Orthodontist Zubad Newaz on tongue space after premolar extractions:
https://www.facebook.com/groups/extractionorthodonticsreversal/posts/8968905549790468/
https://www.tiktok.com/@peraf11/video/7414626139433471265?is_from_webapp=1&web_id=7413950856615691782
178) https://pmc.ncbi.nlm.nih.gov/articles/PMC11180030/
2024 Jun 15;28(7):374. doi: 10.1007/s00784-024-05713-3 PMCID: PMC11180030 PMID: 38878070
Orthodontic maxillary molar movement-induced zygomatic pillar remodeling and its consequences on occlusal characteristics and stress distribution
Size Li 1, Han Bao 1, Xiaojie Su 1, Liping Xiong 1, Qianwen Yin 1, Deao Gu 1, Leiying Miao 2, Chao Liu
Results
The morphological and structural remodeling of the zygomatic pillar after orthodontic treatment involving premolar extraction showed a decreased cross-sectional area of the lower segment of the zygomatic pillar. The zygomatic process point moved inward and backward, whereas the zygomatico-maxillary suture point moved backward. The thicknesses of the zygomatic pillar alveolar and cortical bones were thinner, and reduced alveolar bone density was observed. Simultaneously, the movement and angle change of the maxillary first molar could predict zygomatic pillar reconstruction to a certain extent. With decreasing the total occlusal force and the occlusal force of the first molar, occlusal force distribution was more uniform. With zygomatic pillar remodeling, occlusal stress distribution in the zygomatic alveolar ridge decreased, and occlusal stress was concentrated at the junction of the vertical and horizontal parts of the zygomatic bone and the posterior part of the zygomatic arch.
Conclusions
Orthodontic treatment involving premolar extraction led to zygomatic pillar remodeling, making it more fragile than before and reducing the occlusal force of the maxillary first molar and the entire dentition with stress concentrated in weak areas.
179) Видео (фильм-интервью) с Bill Hang PERAF Interview MP4 https://drive.google.com/file/d/1SnWlixRT99BpByasZ7rhxh0A44rGZbZT/view
180) https://pmc.ncbi.nlm.nih.gov/articles/PMC11180030/ Clin Oral Investig. 2024 Jun 15;28(7):374. doi: 10.1007/s00784-024-05713-3
Orthodontic maxillary molar movement-induced zygomatic pillar remodeling and its consequences on occlusal characteristics and stress distribution
Size Li 1, Han Bao 1, Xiaojie Su 1, Liping Xiong 1, Qianwen Yin 1, Deao Gu 1, Leiying Miao 2, Chao Liu
Results
The morphological and structural remodeling of the zygomatic pillar after orthodontic treatment involving premolar extraction showed a decreased cross-sectional area of the lower segment of the zygomatic pillar. The zygomatic process point moved inward and backward, whereas the zygomatico-maxillary suture point moved backward. The thicknesses of the zygomatic pillar alveolar and cortical bones were thinner, and reduced alveolar bone density was observed. Simultaneously, the movement and angle change of the maxillary first molar could predict zygomatic pillar reconstruction to a certain extent. With decreasing the total occlusal force and the occlusal force of the first molar, occlusal force distribution was more uniform. With zygomatic pillar remodeling, occlusal stress distribution in the zygomatic alveolar ridge decreased, and occlusal stress was concentrated at the junction of the vertical and horizontal parts of the zygomatic bone and the posterior part of the zygomatic arch.
Conclusions
Orthodontic treatment involving premolar extraction led to zygomatic pillar remodeling, making it more fragile than before and reducing the occlusal force of the maxillary first molar and the entire dentition with stress concentrated in weak areas.
EXCERPT FROM DISCUSSION:
Primarily, bone remodeling includes two parts, namely morphological reconstruction and structural reconstruction. Herein, the comparison of the cross-sectional areas of zygomatic pillars within a constant-height plane showed that the cross-sectional area of the lower part of the zygomatic pillar decreased significantly, thereby reflecting the overall remodeling and contraction of the lower part of the zygomatic pillar. The surface morphology landmarks of the middle section of the zygomatic pillar, namely ZM and ZP, moved backward, whereas the ZP point moved medially.
This phenomenon is probably associated with the pressure on the vertical direction of the zygomaticomaxillary suture and the transversal pressure on the zygomatic body when the first molar moves forward [19]. The pressure may have led to bone resorption. Simultaneously, the EKM point moved mesially and palatally and extended along with the maxillary first molar, implying that the starting point of the zygomatic pillar moved with the maxillary first molar, whereas the middle and upper sections shifted backward and medially, respectively.
Additionally, these findings may have implications for facial esthetics. The zygomatic–sphenoid suture point moves backward as the first molar moves mesially and lingually and the zygomatic point moves inward and backward.
These negative changes in the bony prominences may partly explain the negative changes in the soft tissues of the cheekbone and nasolabial groove observed in some patients after orthodontic treatment [20, 21], such as the phenomenon of “brace face” in Chinese female patients with orthodontic issues. These facial changes may not be solely attributed to soft tissue remodeling but the process may involve bony prominence remodeling.
Additionally, restricting the movement of the first molar may offer the possibility to reduce the effect of a “brace face.”
181) https://pubmed.ncbi.nlm.nih.gov/36920861/ Expert Rev Hematol. 2023 Mar;16(sup1):7-11. doi: 10.1080/17474086.2023.2178410. Lived experience experts: a name created by us for us Esmeralda Vázquez 1 2 , Michelle Kim 3 4 , Maria E Santaella 2
Affiliations PMID: 36920861 DOI: 10.1080/17474086.2023.2178410
182) https://www.genesispub.org/effects-of-four-first-premolar-extraction-on-the-upper-airway-dimension-in-a-non-growing-class-i-skeletal-patients:-a-systematic-review
Jae Yong Choi1* and Kenneth Lee2
1Dentist, Orthodontic and Dentofacial Orthopaedics Speciality Masters Program Universitat Jaume I (Spain), Bachelor of Dental Science (University of Queensland), Australia
2Professor Universitat Jaume I, Castellon, BDS (Syd), MSc Oral Implantology (Goethe), MSc Orthodontics (Castellon), FICD, FPFA, Private practice, Sydney, Australia
*Corresponding author: Jae Yong Choi, Student, Jaume I University, Orthodontic and Dentofacial Orthopaedics Specialty Masters Program, Brisbane, Australia.
Citation: Choi JY, Lee K. (2022) Effects of Four First Premolar Extraction on the Upper Airway Dimension in a Non-Growing Class I Skeletal Patients: A Systematic Review. J Oral Med and Dent Res. 3(1):1-16.
Received: March 22, 2022 | Published: May 10, 2022
183) https://www.researchgate.net/publication/350043270_A_case_of_sudden_onset_severe_Cephalgia_in_an_orthodontic_patient_has_demonstrated_how_occlusion_can_precipitate_orofacial_pain
https://adtt.scholasticahq.com/article/21478.pdf
Temporomandibular Joints (TMJ)
A Case Of Sudden Onset Severe Cephalgia In An Orthodontic
Patient Has Demonstrated How Occlusion Can Precipitate Orofacial
Pain
Patrick Girouard,, DMD. MS1, Svitlana Koval, BDS, MDS, DDS2
1 Acadia University, 2 Private Orthodontic Practice
Keywords: t-scan novus, orofacial pain, occlusion, orthodontics, cephalgia, Innobyte
184) https://www.facebook.com/groups/orthodonticmalpracticevictims/posts/1519659875659212/
or those who have experienced their mouths "shrinking" after their extraction orthodontics, and/or feeling their tongue does not have enough space---and need to prove it to someone:
All articles in journals on premolar extraction dental arch changes show that the dental arches get narrower and shorter due to the treatment.
Some articles note that if the extractions are done in adolescence, the growth of the arches is less than it would have been if patient had not been extracted.
Compare the photos of plaster models below: one is the dental arch of a 45 year old adult who had premolar extractions as a kid, the other a 17 year old who had no extractions.
Who do you think had the extractions?
------
DATA
I. See research article proving that dental arches shrink after premolar extractions, which according to the authors is potentially nefarious:
https://pmc.ncbi.nlm.nih.gov/articles/PMC10943680/
II. Here is an article proving that the width of the arches grows less in adolescents with extractions than in adolescents who get no extractions, and even less than those who get nonextraction with palate expansion. Check the charts. The intermolar width in extracted kids grows SMALLER during their two years of treatment (at a time it would naturally be increasing) while it grows at least 2.5 mm greater in non extracted people and even more in expanded people.
The authors highlight that the inter-canine space, however, grows bigger in extracted adolescents almost like the other groups, but point out that this is only because the canine has been pushed back into the premolar’s former space, which is a wider part of the arch. The actual canine area (now the laterals) will have shrunken.
https://academic.oup.com/ejo/article-abstract/27/6/585/400867?redirectedFrom=fulltext&login=false
A comparative study of dental arch widths: extraction and non-extraction treatment Get access Arrow
Fulya Işık , Korkmaz Sayınsu , Didem Nalbantgil , Tülin Arun
European Journal of Orthodontics, Volume 27, Issue 6, December 2005, Pages 585–589, https://doi.org/10.1093/ejo/cji057
Published:
28 October 2005
Оригинал у Карин - оглавление: https://drive.google.com/drive/folders/1ZwLTkWNibO6aSgDJMRHTCKWPeN_3nptq
1) https://disk.yandex.ru/i/GfseERyOj_XTjA (https://t.me/CFS_UARS_TMJD_Ortho_Surgeries/211)
2) https://disk.yandex.ru/i/_0SeZvt2GV25JA (https://t.me/CFS_UARS_TMJD_Ortho_Surgeries/212)
3) https://disk.yandex.ru/i/O20jkGvQyde7bQ (https://t.me/CFS_UARS_TMJD_Ortho_Surgeries/213)
4) https://disk.yandex.ru/i/N4KfPBlOxusFjw (https://t.me/CFS_UARS_TMJD_Ortho_Surgeries/214)
5) https://disk.yandex.ru/i/bwrXTcQrw1tz5g (https://t.me/CFS_UARS_TMJD_Ortho_Surgeries/215)
6) https://disk.yandex.ru/i/9rA7OCu2g52aDw (https://t.me/CFS_UARS_TMJD_Ortho_Surgeries/216)
7) https://disk.yandex.ru/i/Y8uVqRKpq0Ifqw (https://t.me/CFS_UARS_TMJD_Ortho_Surgeries/217)
https://www.ajodo.org/article/0889-5406(92)70076-M/abstract Orthodontic risk factors for temporomandibular disorders (TMD). I: Premolar extractions
DDS, MS Charles R. Kremenaka ∙ DDS, MS D. David Kinserc ∙ DDS, MS Heidi A. Harmand ∙ DDS, MS Curtis C. Menarde ∙ BS, MA Jane R. Jakobsen
The research paper they probably presented was a 1992 study published in the AJO-DO. The 1992 journal has several publications that had been commissioned by the American Association of Orthodontists to protect themselves from lawsuits, after the 1.3 million dollar lawsuit from 19 year old Susan Brimm, who had severe TMD from extraction/retraction (PER). If you read these journal articles, they are absurd. They say that occlusion has nothing to do with the jaw joints hence no connection to TMD. TO combat them, you could collect articles on Bruxism and TMD which prove the correlation between....occlusion and TMD. There is also Witzig's 1960 article on TMD and premolar extractions. There is also the 2023 research article published in a high impact journal establishing that PER causes changes in mandibular kinematics and position and 'Is a risk for TMD."
Продолжение поста Список ссылок https://healthy-back.livejournal.com/477635.html (https://healthy-back.dreamwidth.org/461539.html)
172) https://pmc.ncbi.nlm.nih.gov/articles/PMC3770235/
Saudi Dent J. 2011 Jan 28;23(2):55–59. doi: 10.1016/j.sdentj.2011.01.003
Adverse effects of orthodontic treatment: A clinical perspective
Nabeel F Talic 1,⁎ PMCID: PMC3770235 PMID: 24151415
173) https://pubmed.ncbi.nlm.nih.gov/30664820/
J Oral Rehabil. 2019 Apr;46(4):388-397. doi: 10.1111/joor.12767. Epub 2019 Feb 10.
Dental occlusion and body balance: A question of environmental constraints?
Sonia Julià-Sánchez 1 , Jesús Álvarez-Herms 1 , Martin Burtscher 2 Affiliations PMID: 30664820 DOI: 10.1111/joor.12767
174) https://tmjsleepandbreathecenter.com/why-not-to-remove-teeth-for-braces/ Extraction Retraction Regret Syndrome: Truth about teeth removal for braces by Gary Adams DDS
175) https://pmc.ncbi.nlm.nih.gov/articles/PMC3989577/
"This issue has been noted by many researchers in academic dental training centers worldwide. The results of many studies in this field have shown surprisingly high prevalence rates of TMJ injuries (50-63 %) after extracting mandibular teeth by dental students".
176) https://healthy-back.livejournal.com/485458.html (https://healthy-back.dreamwidth.org/468470.html)
177) Orthodontist Zubad Newaz on tongue space after premolar extractions:
https://www.facebook.com/groups/extractionorthodonticsreversal/posts/8968905549790468/
https://www.tiktok.com/@peraf11/video/7414626139433471265?is_from_webapp=1&web_id=7413950856615691782
178) https://pmc.ncbi.nlm.nih.gov/articles/PMC11180030/
2024 Jun 15;28(7):374. doi: 10.1007/s00784-024-05713-3 PMCID: PMC11180030 PMID: 38878070
Orthodontic maxillary molar movement-induced zygomatic pillar remodeling and its consequences on occlusal characteristics and stress distribution
Size Li 1, Han Bao 1, Xiaojie Su 1, Liping Xiong 1, Qianwen Yin 1, Deao Gu 1, Leiying Miao 2, Chao Liu
Results
The morphological and structural remodeling of the zygomatic pillar after orthodontic treatment involving premolar extraction showed a decreased cross-sectional area of the lower segment of the zygomatic pillar. The zygomatic process point moved inward and backward, whereas the zygomatico-maxillary suture point moved backward. The thicknesses of the zygomatic pillar alveolar and cortical bones were thinner, and reduced alveolar bone density was observed. Simultaneously, the movement and angle change of the maxillary first molar could predict zygomatic pillar reconstruction to a certain extent. With decreasing the total occlusal force and the occlusal force of the first molar, occlusal force distribution was more uniform. With zygomatic pillar remodeling, occlusal stress distribution in the zygomatic alveolar ridge decreased, and occlusal stress was concentrated at the junction of the vertical and horizontal parts of the zygomatic bone and the posterior part of the zygomatic arch.
Conclusions
Orthodontic treatment involving premolar extraction led to zygomatic pillar remodeling, making it more fragile than before and reducing the occlusal force of the maxillary first molar and the entire dentition with stress concentrated in weak areas.
179) Видео (фильм-интервью) с Bill Hang PERAF Interview MP4 https://drive.google.com/file/d/1SnWlixRT99BpByasZ7rhxh0A44rGZbZT/view
180) https://pmc.ncbi.nlm.nih.gov/articles/PMC11180030/ Clin Oral Investig. 2024 Jun 15;28(7):374. doi: 10.1007/s00784-024-05713-3
Orthodontic maxillary molar movement-induced zygomatic pillar remodeling and its consequences on occlusal characteristics and stress distribution
Size Li 1, Han Bao 1, Xiaojie Su 1, Liping Xiong 1, Qianwen Yin 1, Deao Gu 1, Leiying Miao 2, Chao Liu
Results
The morphological and structural remodeling of the zygomatic pillar after orthodontic treatment involving premolar extraction showed a decreased cross-sectional area of the lower segment of the zygomatic pillar. The zygomatic process point moved inward and backward, whereas the zygomatico-maxillary suture point moved backward. The thicknesses of the zygomatic pillar alveolar and cortical bones were thinner, and reduced alveolar bone density was observed. Simultaneously, the movement and angle change of the maxillary first molar could predict zygomatic pillar reconstruction to a certain extent. With decreasing the total occlusal force and the occlusal force of the first molar, occlusal force distribution was more uniform. With zygomatic pillar remodeling, occlusal stress distribution in the zygomatic alveolar ridge decreased, and occlusal stress was concentrated at the junction of the vertical and horizontal parts of the zygomatic bone and the posterior part of the zygomatic arch.
Conclusions
Orthodontic treatment involving premolar extraction led to zygomatic pillar remodeling, making it more fragile than before and reducing the occlusal force of the maxillary first molar and the entire dentition with stress concentrated in weak areas.
EXCERPT FROM DISCUSSION:
Primarily, bone remodeling includes two parts, namely morphological reconstruction and structural reconstruction. Herein, the comparison of the cross-sectional areas of zygomatic pillars within a constant-height plane showed that the cross-sectional area of the lower part of the zygomatic pillar decreased significantly, thereby reflecting the overall remodeling and contraction of the lower part of the zygomatic pillar. The surface morphology landmarks of the middle section of the zygomatic pillar, namely ZM and ZP, moved backward, whereas the ZP point moved medially.
This phenomenon is probably associated with the pressure on the vertical direction of the zygomaticomaxillary suture and the transversal pressure on the zygomatic body when the first molar moves forward [19]. The pressure may have led to bone resorption. Simultaneously, the EKM point moved mesially and palatally and extended along with the maxillary first molar, implying that the starting point of the zygomatic pillar moved with the maxillary first molar, whereas the middle and upper sections shifted backward and medially, respectively.
Additionally, these findings may have implications for facial esthetics. The zygomatic–sphenoid suture point moves backward as the first molar moves mesially and lingually and the zygomatic point moves inward and backward.
These negative changes in the bony prominences may partly explain the negative changes in the soft tissues of the cheekbone and nasolabial groove observed in some patients after orthodontic treatment [20, 21], such as the phenomenon of “brace face” in Chinese female patients with orthodontic issues. These facial changes may not be solely attributed to soft tissue remodeling but the process may involve bony prominence remodeling.
Additionally, restricting the movement of the first molar may offer the possibility to reduce the effect of a “brace face.”
181) https://pubmed.ncbi.nlm.nih.gov/36920861/ Expert Rev Hematol. 2023 Mar;16(sup1):7-11. doi: 10.1080/17474086.2023.2178410. Lived experience experts: a name created by us for us Esmeralda Vázquez 1 2 , Michelle Kim 3 4 , Maria E Santaella 2
Affiliations PMID: 36920861 DOI: 10.1080/17474086.2023.2178410
182) https://www.genesispub.org/effects-of-four-first-premolar-extraction-on-the-upper-airway-dimension-in-a-non-growing-class-i-skeletal-patients:-a-systematic-review
Jae Yong Choi1* and Kenneth Lee2
1Dentist, Orthodontic and Dentofacial Orthopaedics Speciality Masters Program Universitat Jaume I (Spain), Bachelor of Dental Science (University of Queensland), Australia
2Professor Universitat Jaume I, Castellon, BDS (Syd), MSc Oral Implantology (Goethe), MSc Orthodontics (Castellon), FICD, FPFA, Private practice, Sydney, Australia
*Corresponding author: Jae Yong Choi, Student, Jaume I University, Orthodontic and Dentofacial Orthopaedics Specialty Masters Program, Brisbane, Australia.
Citation: Choi JY, Lee K. (2022) Effects of Four First Premolar Extraction on the Upper Airway Dimension in a Non-Growing Class I Skeletal Patients: A Systematic Review. J Oral Med and Dent Res. 3(1):1-16.
Received: March 22, 2022 | Published: May 10, 2022
183) https://www.researchgate.net/publication/350043270_A_case_of_sudden_onset_severe_Cephalgia_in_an_orthodontic_patient_has_demonstrated_how_occlusion_can_precipitate_orofacial_pain
https://adtt.scholasticahq.com/article/21478.pdf
Temporomandibular Joints (TMJ)
A Case Of Sudden Onset Severe Cephalgia In An Orthodontic
Patient Has Demonstrated How Occlusion Can Precipitate Orofacial
Pain
Patrick Girouard,, DMD. MS1, Svitlana Koval, BDS, MDS, DDS2
1 Acadia University, 2 Private Orthodontic Practice
Keywords: t-scan novus, orofacial pain, occlusion, orthodontics, cephalgia, Innobyte
184) https://www.facebook.com/groups/orthodonticmalpracticevictims/posts/1519659875659212/
or those who have experienced their mouths "shrinking" after their extraction orthodontics, and/or feeling their tongue does not have enough space---and need to prove it to someone:
All articles in journals on premolar extraction dental arch changes show that the dental arches get narrower and shorter due to the treatment.
Some articles note that if the extractions are done in adolescence, the growth of the arches is less than it would have been if patient had not been extracted.
Compare the photos of plaster models below: one is the dental arch of a 45 year old adult who had premolar extractions as a kid, the other a 17 year old who had no extractions.
Who do you think had the extractions?
------
DATA
I. See research article proving that dental arches shrink after premolar extractions, which according to the authors is potentially nefarious:
https://pmc.ncbi.nlm.nih.gov/articles/PMC10943680/
II. Here is an article proving that the width of the arches grows less in adolescents with extractions than in adolescents who get no extractions, and even less than those who get nonextraction with palate expansion. Check the charts. The intermolar width in extracted kids grows SMALLER during their two years of treatment (at a time it would naturally be increasing) while it grows at least 2.5 mm greater in non extracted people and even more in expanded people.
The authors highlight that the inter-canine space, however, grows bigger in extracted adolescents almost like the other groups, but point out that this is only because the canine has been pushed back into the premolar’s former space, which is a wider part of the arch. The actual canine area (now the laterals) will have shrunken.
https://academic.oup.com/ejo/article-abstract/27/6/585/400867?redirectedFrom=fulltext&login=false
A comparative study of dental arch widths: extraction and non-extraction treatment Get access Arrow
Fulya Işık , Korkmaz Sayınsu , Didem Nalbantgil , Tülin Arun
European Journal of Orthodontics, Volume 27, Issue 6, December 2005, Pages 585–589, https://doi.org/10.1093/ejo/cji057
Published:
28 October 2005