Antonino Lo Giudice1, Rosalia Leonardi2, Vincenzo Ronsivalle2, Silvia Allegrini3, Manuel Lagravère4, Giuseppe Marzo5, Gaetano Isola2. 1. Department of General Surgery and Surgical-Medical Specialties, Section of Orthodontics, School of Dentistry, University of Catania, Via Santa Sofia 78, 95123, Catania, Italy. nino.logiudice@gmail.com. 2. Department of General Surgery and Surgical-Medical Specialties, Section of Orthodontics, School of Dentistry, University of Catania, Via Santa Sofia 78, 95123, Catania, Italy. 3. Private Practice, Pisa, Italy. 4. Orthodontic Graduate Program, Edmonton Clinic Health Academy, University of Alberta, 5th Floor, 11405 - 87 Avenue NW, Edmonton, Alberta, Canada. 5. Department of Life, Health and Environmental Sciences, University of L'Aquila, V.le San Salvatore, 67100, L'Aquila, Italy.
Abstract
OBJECTIVES: To compare volume and shape changes of pulp chamber of maxillary posterior teeth between tooth-borne and bone-borne maxillary expansions in adolescents. MATERIALS AND METHODS: This study included 36 adolescents with bilateral maxillary crossbite who received tooth-borne rapid maxillary expansion (TB group, average age 14.4 years) or bone-borne rapid maxillary expansion (BB group, average age 14.7 years). Cone beam computed tomography (CBCT) was taken before treatment (T1) and after a 6-month retention period (T2). Volumetric and shape changes of pulp chamber of maxillary first molars and premolars were detected by referring to a specific 3D digital technology involving deviation analysis of T1/T2 CBCT-derived models of pulp chamber. Student's t tests were used to (1) compare T1 and T2 volumes of pulp chambers in TB and BB groups and (2) assess differences between the two groups in the post-treatment volumetric changes and in the percentage of matching of 3D pulp models. RESULTS: All investigated teeth showed a reduction of pulp volume, being this difference significant in both TB (p < 0.0001) and BB (p < 0.0001) groups. The volumetric reduction was greater in the TB group; also, subjects in the TB group showed a lower percentage of matching between T1 and T2 pulp models (p < 0.0001). The area most affected by shape change was that of pulp horns. CONCLUSIONS: TB expander could induce a higher volumetric reduction of pulp chamber of posterior teeth compared with BB expander, in the short term. CLINICAL RELEVANCE: The present findings add new information concerning the effects of RME protocols on pulp tissue.
OBJECTIVES: To compare volume and shape changes of pulp chamber of maxillary posterior teeth between tooth-borne and bone-borne maxillary expansions in adolescents. MATERIALS AND METHODS: This study included 36 adolescents with bilateral maxillary crossbite who received tooth-borne rapid maxillary expansion (TB group, average age 14.4 years) or bone-borne rapid maxillary expansion (BB group, average age 14.7 years). Cone beam computed tomography (CBCT) was taken before treatment (T1) and after a 6-month retention period (T2). Volumetric and shape changes of pulp chamber of maxillary first molars and premolars were detected by referring to a specific 3D digital technology involving deviation analysis of T1/T2 CBCT-derived models of pulp chamber. Student's t tests were used to (1) compare T1 and T2 volumes of pulp chambers in TB and BB groups and (2) assess differences between the two groups in the post-treatment volumetric changes and in the percentage of matching of 3D pulp models. RESULTS: All investigated teeth showed a reduction of pulp volume, being this difference significant in both TB (p < 0.0001) and BB (p < 0.0001) groups. The volumetric reduction was greater in the TB group; also, subjects in the TB group showed a lower percentage of matching between T1 and T2 pulp models (p < 0.0001). The area most affected by shape change was that of pulp horns. CONCLUSIONS:TB expander could induce a higher volumetric reduction of pulp chamber of posterior teeth compared with BB expander, in the short term. CLINICAL RELEVANCE: The present findings add new information concerning the effects of RME protocols on pulp tissue.
Entities:
Keywords:
Bone-borne RME; Pulpal changes; RME side effects; Tooth-borne RME
Authors: A Lo Giudice; R Fastuca; M Portelli; A Militi; M Bellocchio; P Spinuzza; F Briguglio; A Caprioglio; R Nucera Journal: Eur J Paediatr Dent Date: 2017-12 Impact factor: 2.231
Authors: Hana'a A Al-Kyssi; Naela M Al-Mogahed; Zainab M Altawili; Faiz N Dahan; Abeer A Almashraqi; Khalid Aldhorae; Maged S Alhammadi Journal: BMC Oral Health Date: 2022-06-03 Impact factor: 3.747
Authors: Nameer Al-Taai; Eva Levring Jäghagen; Maurits Persson; Maria Ransjö; Anna Westerlund Journal: Int J Environ Res Public Health Date: 2021-05-14 Impact factor: 3.390