<abstract xmlns="http://www.w3.org/1999/xhtml">

Interproximal reduction (IPR) is a therapeutic procedure used during orthodontic treatment and is apparently a commonly incorporated feature in the treatment planning of aligner cases.
The present study investigated the prescription of IPR in the 50 most recently accepted initial aligner treatment plans for each of 10 orthodontic practices. The number of plans incorporating IPR, as well as the magnitude and location of the prescribed IPR, were assessed.
The results showed that IPR was heavily prescribed, with an average of 71% of the 500 reviewed plans receiving IPR as part of that plan. When IPR was prescribed, the amount averaged 2.16 mm per case over 6.92 contact points. The lower anterior teeth had the most heavily prescribed IPR associated with the number of interproximal contacts and the respective amount, while the upper anterior teeth had the least heavily prescribed IPR.
</abstract>

Interproximal reduction (IPR) is a therapeutic procedure used during orthodontic treatment and is apparently a commonly incorporated feature in the treatment planning of aligner cases.
The present study investigated the prescription of IPR in the 50 most recently accepted initial aligner treatment plans for each of 10 orthodontic practices. The number of plans incorporating IPR, as well as the magnitude and location of the prescribed IPR, were assessed.
The results showed that IPR was heavily prescribed, with an average of 71% of the 500 reviewed plans receiving IPR as part of that plan. When IPR was prescribed, the amount averaged 2.16 mm per case over 6.92 contact points. The lower anterior teeth had the most heavily prescribed IPR associated with the number of interproximal contacts and the respective amount, while the upper anterior teeth had the least heavily prescribed IPR.

Prevalence of interproximal tooth reduction prescribed as part of initial Invisalign® treatment in 10 orthodontic practices

Discipline of Orthodontics, School of Dentistry

Australasian Orthodontic Journal

This work is licensed under the Creative Commons Attribution 4.0 International License.

Prevalence of interproximal tooth reduction prescribed as part of initial Invisalign treatment in 10 orthodontic practices

Interproximal reduction (IPR) is a therapeutic procedure used during orthodontic treatment and is apparently a commonly incorporated feature in the treatment...

	% of cases with IPR	IPR/patient overall (mm)	Sites/patient overall	IPR/site (mm)
Dr A	38	2.71	8.42	0.32
Dr B	58	1.43	5.31	0.27
Dr C	54	2.29	6.26	0.37
Dr D	78	2.87	9.67	0.30
Dr E	55	1.86	5.81	0.32
Dr F	78	1.79	5.13	0.35
Dr G	90	2.56	8.20	0.31
Dr H	78	2.72	7.34	0.37
Dr I	84	0.86	3.86	0.22
Dr J	98	2.61	8.47	0.31
Combined	71	2.16	6.92	0.31

	MxA sites	MxA IPR	MxP sites	MxP IPR	MdA sites	MdA IPR	MdP sites	MdP IPR
Dr A	5.38	1.73	2.00	0.73	6.40	2.03	4.00	1.20
Dr B	2.77	0.79	0.00	0.00	5.04	1.33	2.00	0.60
Dr C	4.06	1.36	0.00	0.00	5.21	1.98	2.50	1.15
Dr D	3.36	1.00	2.60	0.86	5.45	1.46	3.10	1.07
Dr E	4.00	1.30	0.00	0.00	5.33	1.68	4.00	1.80
Dr F	2.33	0.83	2.00	0.47	3.81	1.35	2.00	0.60
Dr G	4.47	1.37	2.78	0.90	6.09	1.86	2.71	0.92
Dr H	3.33	1.22	2.75	1.08	5.69	1.94	2.64	1.54
Dr I	1.72	0.40	0.00	0.00	3.16	0.70	2.00	0.40
Dr J	3.48	0.96	1.00	0.20	5.25	1.71	2.31	0.77
Combined	3.33	1.02	2.53	0.84	5.03	1.54	2.76	1.03

Prevalence of interproximal tooth reduction prescribed as part of initial Invisalign^® treatment in 10 orthodontic practices

Publicado en línea: 14 feb 2022

Páginas: 96 - 101

Recibido: 01 dic 2021

Aceptado: 01 ene 2022

DOI: https://doi.org/10.21307/aoj-2022.009

© 2022 Tony Weir et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1

Figure 2

Overall IPR prescription (% of cases with IPR, and when prescribed, the average amount and the number of sites prescribed).

IPR Prescription by number of sites and average quantity for all orthodontic practices by zone.