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P Bracco - One of the best experts on this subject based on the ideXlab platform.
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reverse sequencing chewing patterns evaluation in anterior versus posterior unilateral Crossbite patients
European Journal of Ophthalmology, 2012Co-Authors: Maria Grazia Piancino, F Talpone, Elena Comino, Teresa Vallelonga, Gianluigi Frongia, P BraccoAbstract:It is well established that patients with a unilateral posterior Crossbite exhibit reverse-sequencing chewing patterns when chewing on the affected side. The aim of the study was to compare the prevalence of reverse-sequencing chewing cycles in patients with anterior versus posterior unilateral Crossbite during chewing soft and hard boluses. Eighty-six children (39 boys, 47 girls) were included in the study: 26 (10.4 ± 2.7 years) with unilateral anterior Crossbite, 43 (10.2 ± 4.2 years) with unilateral posterior Crossbite, and 17 (10.6 ± 2 years) with normal occlusion were selected for the study. Mandibular movements were measured with a kinesiograph (K7, Myotronics Inc. Tukwila). The kinematic signals were analyzed using custom-made software. The results showed a low prevalence of reverse-sequencing chewing cycles in patients with anterior Crossbite, without any significant difference between sides and with the control group, with both soft ( P = 0.33) and hard ( P = 0.29) bolus. The patients with posterior unilateral Crossbite showed a significant higher prevalence of reverse-sequencing chewing cycles during chewing on the Crossbite side with respect to the non-Crossbite side ( P < 0.001) and to the control group ( P < 0.001). Comparing the patients with anterior versus posterior unilateral Crossbite, a significant difference ( P < 0.001) in the prevalence of reverse chewing cycles was demonstrated during chewing on the posterior Crossbite side only with both soft and hard bolus. In conclusion, patients with anterior versus posterior unilateral Crossbite show different functional characteristics depending on which dental region is involved.
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Reverse-sequencing chewing cycles in a family unit with bilateral posterior Crossbite
international journal of stomatology & occlusion medicine, 2010Co-Authors: Maria Grazia Piancino, F Talpone, T. Vallelonga, O. Manera, P. De Lama, G. Altamura, P BraccoAbstract:PURPOSE: Reverse chewing cycles are dyskinetic masticatory pattern highly represented in Crossbite patients. The aim of this study was to analyze the prevalence of reverse-sequencing chewing cycles in a family (41-year-old father, 41-year-old mother, 10.8-year-old daughter, 7-year-old son), affected by Crossbite, to evaluate the functional aspects of an inherited malocclusion. Material and methods: All the family components underwent orthodontic evaluation and chewing cycles recorded with a Myotronics K6-1 kinesiograph. RESULTS: The results showed that the father, who previously corrected a right posterior Crossbite, did not develop reverse chewing cycles (0% on the right side and 0% on the left side). The mother and the boy, affected by a bilateral posterior symmetric Crossbite, developed significant reverse chewing cycles on both sides (89% on the right side, 75% on the left side, the mother and 70% on the right side, 90% on the left side, the boy); the girl, affected by a bilateral posterior Crossbite with a greater number of teeth in Crossbite on the left side, developed significant reverse chewing cycles on the left side only (5% on the right side and 100% on the left side). CONCLUSION: The prevalence of the reverse chewing cycles resulted in agreement with the Crossbite, mirroring the dental characteristics. These results suggest that not only the bone structure and the dental assessment, but also the function might be inherited. As a consequence, the evaluation of the family history might be an important diagnostic data to early intercept the malocclusion.
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muscular activation during reverse and non reverse chewing cycles in unilateral posterior Crossbite
European Journal of Oral Sciences, 2009Co-Authors: Maria Grazia Piancino, Dario Farina, F Talpone, A Merlo, P BraccoAbstract:Mastication is one of the most complex and co-ordinatedfunctional movements. The masticatory system is capa-ble of exerting high forces through the execution of veryprecise movements. The accuracy of the movement isimportant for avoiding damage to the stomathognaticsystem and for maximizing efficiency. The pattern ofmandibular movement during chewing is influenced byfactors such as the bolus type and the type of occlusion(1–4). The relative position of the upper and lower teethdetermines occlusal stability, which is related to muscu-lar performance.Crossbite is a widespread malocclusion, prevalent inthe range of 8–22% (5). Unilateral posterior Crossbite,which represents half of all Crossbites, is an asymmetricmalocclusion characterized by an inverse relationship ofthe upper and lower buccal dental cusps, in the molarand premolar regions, on one side only of the dentalarch. It may originate from a skeletal relationship or adental relationship, or both, and may lead to mandibulardisplacement accompanied by lower midline deviation(6). It develops in children between 2 and 5 yr of age,during eruption of the primary dentition, and caninvolve the permanent dentition at a later stage ofdevelopment (7, 8).Compared with control groups, children with unilat-eral posterior Crossbite exhibit different kinematics of themandible during mastication when chewing on theaffected side. During normal chewing, the mandibledeviates laterally towards the bolus side and then medi-ally during closure (9). The frequency of reverse chewingcycles is substantially increased in children with unilat-eral posterior Crossbite (1, 10–14). In reverse cycles themandible first deviates medially and then laterally, thusensuring overlap of opposing dental occlusal surfaces.Reverse chewing cycles show an abnormal, narrow pat-tern characterized by smaller lateral displacement andslower velocity of the mandible in comparison withnormal chewing. In a patient with unilateral Crossbite,reverse cycles occur mainly on the Crossbite side,although not all cycles are reverse when chewing fromthe Crossbite side (11–16).Mandibular movements during chewing depend on theinterplay of the masticatory muscles; thus, abnormalchewing kinematics is associated with altered muscleactivation. Abnormal chewing in children has an impacton the growing structures and may lead to an irreversibleasymmetry of the anatomical structures (bones, tempo-romandibular joint, muscles, teeth) (17–21).In patients with unilateral posterior Crossbite, themasseter of the Crossbite side is less active (22, 23), andthe co-ordination of the masticatory muscles on the twosides is altered (24), with respect to controls. However,no studies have investigated concurrently the kinematicsof the chewing cycle and the electromyography (EMG)activity of masticatory muscles in patients with unilateralCrossbite. Moreover, it is not known if reverse and
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reverse sequencing chewing patterns before and after treatment of children with a unilateral posterior Crossbite
European Journal of Ophthalmology, 2006Co-Authors: Maria Grazia Piancino, F Talpone, Paola Dalmasso, C Debernardi, Arthur Lewin, P BraccoAbstract:SUMMARY The aim of this study was to compare the percentage of reverse-sequencing chewing cycles in 22 children [9 boys and 13 girls; mean age ± SD, 8.6 ± 1.3 and 8.8 ± 1.5 years, respectively), with a unilateral right or left posterior Crossbite, before and after therapy. The chewing cycles were recorded using a kinesiograph while the subjects masticated a soft and a hard bolus on both the Crossbite and non-Crossbite side. Chewing data were acquired before and 6 months after orthodontic treatment of the Crossbite with an orthodontic functional appliance, the ‘ Function Generating Bite ’ . The results showed that, before therapy, the percentage of reverse-sequencing chewing cycles on the Crossbite side was signifi cantly higher than that on the normal side ( P < 0.001) with both the soft and hard bolus. In addition, the percentage of reverse-sequencing chewing cycles on the Crossbite side before therapy was signifi cantly greater than after therapy with both a soft and hard bolus ( P < 0.001). No signifi cant differences were found in the percentage of reverse-sequencing chewing cycles on the nonCrossbite side, before or after therapy, either with a soft or hard bolus.
Emine Sen Tunc - One of the best experts on this subject based on the ideXlab platform.
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treatment of anterior dental Crossbite using bonded resin composite slopes case reports
European Journal of Dentistry, 2008Co-Authors: Sule Bayrak, Emine Sen TuncAbstract:Anterior Crossbite is the term used to describe an abnormal labiolingual relationship between one or more maxillary and mandibular incisor teeth. Different techniques have been used to correct anterior Crossbite. This paper describes the use of bonded resin-composite slopes for the management of anterior Crossbite in children in early mixed dentition. In each of the cases presented here, dental Crossbite was corrected by applying a 3–4 mm bonded resin-composite slope to the incisal edge of the mandibular incisor with an angle 45° to the longitudinal axis of the tooth. Correction was achieved within 1–2 weeks with no damage to either the tooth or the marginal periodontal tissue. The procedure is a simple and effective method for treating anterior dental Crossbite.
Maria Grazia Piancino - One of the best experts on this subject based on the ideXlab platform.
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reverse sequencing chewing patterns evaluation in anterior versus posterior unilateral Crossbite patients
European Journal of Ophthalmology, 2012Co-Authors: Maria Grazia Piancino, F Talpone, Elena Comino, Teresa Vallelonga, Gianluigi Frongia, P BraccoAbstract:It is well established that patients with a unilateral posterior Crossbite exhibit reverse-sequencing chewing patterns when chewing on the affected side. The aim of the study was to compare the prevalence of reverse-sequencing chewing cycles in patients with anterior versus posterior unilateral Crossbite during chewing soft and hard boluses. Eighty-six children (39 boys, 47 girls) were included in the study: 26 (10.4 ± 2.7 years) with unilateral anterior Crossbite, 43 (10.2 ± 4.2 years) with unilateral posterior Crossbite, and 17 (10.6 ± 2 years) with normal occlusion were selected for the study. Mandibular movements were measured with a kinesiograph (K7, Myotronics Inc. Tukwila). The kinematic signals were analyzed using custom-made software. The results showed a low prevalence of reverse-sequencing chewing cycles in patients with anterior Crossbite, without any significant difference between sides and with the control group, with both soft ( P = 0.33) and hard ( P = 0.29) bolus. The patients with posterior unilateral Crossbite showed a significant higher prevalence of reverse-sequencing chewing cycles during chewing on the Crossbite side with respect to the non-Crossbite side ( P < 0.001) and to the control group ( P < 0.001). Comparing the patients with anterior versus posterior unilateral Crossbite, a significant difference ( P < 0.001) in the prevalence of reverse chewing cycles was demonstrated during chewing on the posterior Crossbite side only with both soft and hard bolus. In conclusion, patients with anterior versus posterior unilateral Crossbite show different functional characteristics depending on which dental region is involved.
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Reverse-sequencing chewing cycles in a family unit with bilateral posterior Crossbite
international journal of stomatology & occlusion medicine, 2010Co-Authors: Maria Grazia Piancino, F Talpone, T. Vallelonga, O. Manera, P. De Lama, G. Altamura, P BraccoAbstract:PURPOSE: Reverse chewing cycles are dyskinetic masticatory pattern highly represented in Crossbite patients. The aim of this study was to analyze the prevalence of reverse-sequencing chewing cycles in a family (41-year-old father, 41-year-old mother, 10.8-year-old daughter, 7-year-old son), affected by Crossbite, to evaluate the functional aspects of an inherited malocclusion. Material and methods: All the family components underwent orthodontic evaluation and chewing cycles recorded with a Myotronics K6-1 kinesiograph. RESULTS: The results showed that the father, who previously corrected a right posterior Crossbite, did not develop reverse chewing cycles (0% on the right side and 0% on the left side). The mother and the boy, affected by a bilateral posterior symmetric Crossbite, developed significant reverse chewing cycles on both sides (89% on the right side, 75% on the left side, the mother and 70% on the right side, 90% on the left side, the boy); the girl, affected by a bilateral posterior Crossbite with a greater number of teeth in Crossbite on the left side, developed significant reverse chewing cycles on the left side only (5% on the right side and 100% on the left side). CONCLUSION: The prevalence of the reverse chewing cycles resulted in agreement with the Crossbite, mirroring the dental characteristics. These results suggest that not only the bone structure and the dental assessment, but also the function might be inherited. As a consequence, the evaluation of the family history might be an important diagnostic data to early intercept the malocclusion.
-
muscular activation during reverse and non reverse chewing cycles in unilateral posterior Crossbite
European Journal of Oral Sciences, 2009Co-Authors: Maria Grazia Piancino, Dario Farina, F Talpone, A Merlo, P BraccoAbstract:Mastication is one of the most complex and co-ordinatedfunctional movements. The masticatory system is capa-ble of exerting high forces through the execution of veryprecise movements. The accuracy of the movement isimportant for avoiding damage to the stomathognaticsystem and for maximizing efficiency. The pattern ofmandibular movement during chewing is influenced byfactors such as the bolus type and the type of occlusion(1–4). The relative position of the upper and lower teethdetermines occlusal stability, which is related to muscu-lar performance.Crossbite is a widespread malocclusion, prevalent inthe range of 8–22% (5). Unilateral posterior Crossbite,which represents half of all Crossbites, is an asymmetricmalocclusion characterized by an inverse relationship ofthe upper and lower buccal dental cusps, in the molarand premolar regions, on one side only of the dentalarch. It may originate from a skeletal relationship or adental relationship, or both, and may lead to mandibulardisplacement accompanied by lower midline deviation(6). It develops in children between 2 and 5 yr of age,during eruption of the primary dentition, and caninvolve the permanent dentition at a later stage ofdevelopment (7, 8).Compared with control groups, children with unilat-eral posterior Crossbite exhibit different kinematics of themandible during mastication when chewing on theaffected side. During normal chewing, the mandibledeviates laterally towards the bolus side and then medi-ally during closure (9). The frequency of reverse chewingcycles is substantially increased in children with unilat-eral posterior Crossbite (1, 10–14). In reverse cycles themandible first deviates medially and then laterally, thusensuring overlap of opposing dental occlusal surfaces.Reverse chewing cycles show an abnormal, narrow pat-tern characterized by smaller lateral displacement andslower velocity of the mandible in comparison withnormal chewing. In a patient with unilateral Crossbite,reverse cycles occur mainly on the Crossbite side,although not all cycles are reverse when chewing fromthe Crossbite side (11–16).Mandibular movements during chewing depend on theinterplay of the masticatory muscles; thus, abnormalchewing kinematics is associated with altered muscleactivation. Abnormal chewing in children has an impacton the growing structures and may lead to an irreversibleasymmetry of the anatomical structures (bones, tempo-romandibular joint, muscles, teeth) (17–21).In patients with unilateral posterior Crossbite, themasseter of the Crossbite side is less active (22, 23), andthe co-ordination of the masticatory muscles on the twosides is altered (24), with respect to controls. However,no studies have investigated concurrently the kinematicsof the chewing cycle and the electromyography (EMG)activity of masticatory muscles in patients with unilateralCrossbite. Moreover, it is not known if reverse and
-
reverse sequencing chewing patterns before and after treatment of children with a unilateral posterior Crossbite
European Journal of Ophthalmology, 2006Co-Authors: Maria Grazia Piancino, F Talpone, Paola Dalmasso, C Debernardi, Arthur Lewin, P BraccoAbstract:SUMMARY The aim of this study was to compare the percentage of reverse-sequencing chewing cycles in 22 children [9 boys and 13 girls; mean age ± SD, 8.6 ± 1.3 and 8.8 ± 1.5 years, respectively), with a unilateral right or left posterior Crossbite, before and after therapy. The chewing cycles were recorded using a kinesiograph while the subjects masticated a soft and a hard bolus on both the Crossbite and non-Crossbite side. Chewing data were acquired before and 6 months after orthodontic treatment of the Crossbite with an orthodontic functional appliance, the ‘ Function Generating Bite ’ . The results showed that, before therapy, the percentage of reverse-sequencing chewing cycles on the Crossbite side was signifi cantly higher than that on the normal side ( P < 0.001) with both the soft and hard bolus. In addition, the percentage of reverse-sequencing chewing cycles on the Crossbite side before therapy was signifi cantly greater than after therapy with both a soft and hard bolus ( P < 0.001). No signifi cant differences were found in the percentage of reverse-sequencing chewing cycles on the nonCrossbite side, before or after therapy, either with a soft or hard bolus.
Sule Bayrak - One of the best experts on this subject based on the ideXlab platform.
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treatment of anterior dental Crossbite using bonded resin composite slopes case reports
European Journal of Dentistry, 2008Co-Authors: Sule Bayrak, Emine Sen TuncAbstract:Anterior Crossbite is the term used to describe an abnormal labiolingual relationship between one or more maxillary and mandibular incisor teeth. Different techniques have been used to correct anterior Crossbite. This paper describes the use of bonded resin-composite slopes for the management of anterior Crossbite in children in early mixed dentition. In each of the cases presented here, dental Crossbite was corrected by applying a 3–4 mm bonded resin-composite slope to the incisal edge of the mandibular incisor with an angle 45° to the longitudinal axis of the tooth. Correction was achieved within 1–2 weeks with no damage to either the tooth or the marginal periodontal tissue. The procedure is a simple and effective method for treating anterior dental Crossbite.
F Talpone - One of the best experts on this subject based on the ideXlab platform.
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reverse sequencing chewing patterns evaluation in anterior versus posterior unilateral Crossbite patients
European Journal of Ophthalmology, 2012Co-Authors: Maria Grazia Piancino, F Talpone, Elena Comino, Teresa Vallelonga, Gianluigi Frongia, P BraccoAbstract:It is well established that patients with a unilateral posterior Crossbite exhibit reverse-sequencing chewing patterns when chewing on the affected side. The aim of the study was to compare the prevalence of reverse-sequencing chewing cycles in patients with anterior versus posterior unilateral Crossbite during chewing soft and hard boluses. Eighty-six children (39 boys, 47 girls) were included in the study: 26 (10.4 ± 2.7 years) with unilateral anterior Crossbite, 43 (10.2 ± 4.2 years) with unilateral posterior Crossbite, and 17 (10.6 ± 2 years) with normal occlusion were selected for the study. Mandibular movements were measured with a kinesiograph (K7, Myotronics Inc. Tukwila). The kinematic signals were analyzed using custom-made software. The results showed a low prevalence of reverse-sequencing chewing cycles in patients with anterior Crossbite, without any significant difference between sides and with the control group, with both soft ( P = 0.33) and hard ( P = 0.29) bolus. The patients with posterior unilateral Crossbite showed a significant higher prevalence of reverse-sequencing chewing cycles during chewing on the Crossbite side with respect to the non-Crossbite side ( P < 0.001) and to the control group ( P < 0.001). Comparing the patients with anterior versus posterior unilateral Crossbite, a significant difference ( P < 0.001) in the prevalence of reverse chewing cycles was demonstrated during chewing on the posterior Crossbite side only with both soft and hard bolus. In conclusion, patients with anterior versus posterior unilateral Crossbite show different functional characteristics depending on which dental region is involved.
-
Reverse-sequencing chewing cycles in a family unit with bilateral posterior Crossbite
international journal of stomatology & occlusion medicine, 2010Co-Authors: Maria Grazia Piancino, F Talpone, T. Vallelonga, O. Manera, P. De Lama, G. Altamura, P BraccoAbstract:PURPOSE: Reverse chewing cycles are dyskinetic masticatory pattern highly represented in Crossbite patients. The aim of this study was to analyze the prevalence of reverse-sequencing chewing cycles in a family (41-year-old father, 41-year-old mother, 10.8-year-old daughter, 7-year-old son), affected by Crossbite, to evaluate the functional aspects of an inherited malocclusion. Material and methods: All the family components underwent orthodontic evaluation and chewing cycles recorded with a Myotronics K6-1 kinesiograph. RESULTS: The results showed that the father, who previously corrected a right posterior Crossbite, did not develop reverse chewing cycles (0% on the right side and 0% on the left side). The mother and the boy, affected by a bilateral posterior symmetric Crossbite, developed significant reverse chewing cycles on both sides (89% on the right side, 75% on the left side, the mother and 70% on the right side, 90% on the left side, the boy); the girl, affected by a bilateral posterior Crossbite with a greater number of teeth in Crossbite on the left side, developed significant reverse chewing cycles on the left side only (5% on the right side and 100% on the left side). CONCLUSION: The prevalence of the reverse chewing cycles resulted in agreement with the Crossbite, mirroring the dental characteristics. These results suggest that not only the bone structure and the dental assessment, but also the function might be inherited. As a consequence, the evaluation of the family history might be an important diagnostic data to early intercept the malocclusion.
-
muscular activation during reverse and non reverse chewing cycles in unilateral posterior Crossbite
European Journal of Oral Sciences, 2009Co-Authors: Maria Grazia Piancino, Dario Farina, F Talpone, A Merlo, P BraccoAbstract:Mastication is one of the most complex and co-ordinatedfunctional movements. The masticatory system is capa-ble of exerting high forces through the execution of veryprecise movements. The accuracy of the movement isimportant for avoiding damage to the stomathognaticsystem and for maximizing efficiency. The pattern ofmandibular movement during chewing is influenced byfactors such as the bolus type and the type of occlusion(1–4). The relative position of the upper and lower teethdetermines occlusal stability, which is related to muscu-lar performance.Crossbite is a widespread malocclusion, prevalent inthe range of 8–22% (5). Unilateral posterior Crossbite,which represents half of all Crossbites, is an asymmetricmalocclusion characterized by an inverse relationship ofthe upper and lower buccal dental cusps, in the molarand premolar regions, on one side only of the dentalarch. It may originate from a skeletal relationship or adental relationship, or both, and may lead to mandibulardisplacement accompanied by lower midline deviation(6). It develops in children between 2 and 5 yr of age,during eruption of the primary dentition, and caninvolve the permanent dentition at a later stage ofdevelopment (7, 8).Compared with control groups, children with unilat-eral posterior Crossbite exhibit different kinematics of themandible during mastication when chewing on theaffected side. During normal chewing, the mandibledeviates laterally towards the bolus side and then medi-ally during closure (9). The frequency of reverse chewingcycles is substantially increased in children with unilat-eral posterior Crossbite (1, 10–14). In reverse cycles themandible first deviates medially and then laterally, thusensuring overlap of opposing dental occlusal surfaces.Reverse chewing cycles show an abnormal, narrow pat-tern characterized by smaller lateral displacement andslower velocity of the mandible in comparison withnormal chewing. In a patient with unilateral Crossbite,reverse cycles occur mainly on the Crossbite side,although not all cycles are reverse when chewing fromthe Crossbite side (11–16).Mandibular movements during chewing depend on theinterplay of the masticatory muscles; thus, abnormalchewing kinematics is associated with altered muscleactivation. Abnormal chewing in children has an impacton the growing structures and may lead to an irreversibleasymmetry of the anatomical structures (bones, tempo-romandibular joint, muscles, teeth) (17–21).In patients with unilateral posterior Crossbite, themasseter of the Crossbite side is less active (22, 23), andthe co-ordination of the masticatory muscles on the twosides is altered (24), with respect to controls. However,no studies have investigated concurrently the kinematicsof the chewing cycle and the electromyography (EMG)activity of masticatory muscles in patients with unilateralCrossbite. Moreover, it is not known if reverse and
-
reverse sequencing chewing patterns before and after treatment of children with a unilateral posterior Crossbite
European Journal of Ophthalmology, 2006Co-Authors: Maria Grazia Piancino, F Talpone, Paola Dalmasso, C Debernardi, Arthur Lewin, P BraccoAbstract:SUMMARY The aim of this study was to compare the percentage of reverse-sequencing chewing cycles in 22 children [9 boys and 13 girls; mean age ± SD, 8.6 ± 1.3 and 8.8 ± 1.5 years, respectively), with a unilateral right or left posterior Crossbite, before and after therapy. The chewing cycles were recorded using a kinesiograph while the subjects masticated a soft and a hard bolus on both the Crossbite and non-Crossbite side. Chewing data were acquired before and 6 months after orthodontic treatment of the Crossbite with an orthodontic functional appliance, the ‘ Function Generating Bite ’ . The results showed that, before therapy, the percentage of reverse-sequencing chewing cycles on the Crossbite side was signifi cantly higher than that on the normal side ( P < 0.001) with both the soft and hard bolus. In addition, the percentage of reverse-sequencing chewing cycles on the Crossbite side before therapy was signifi cantly greater than after therapy with both a soft and hard bolus ( P < 0.001). No signifi cant differences were found in the percentage of reverse-sequencing chewing cycles on the nonCrossbite side, before or after therapy, either with a soft or hard bolus.