BACKGROUND Invaginated teeth pose greater challenges in clinical management because of their complex configuration.With advancements in equipment and materials,such as the dental operation microscope,cone-beam compute...BACKGROUND Invaginated teeth pose greater challenges in clinical management because of their complex configuration.With advancements in equipment and materials,such as the dental operation microscope,cone-beam computed tomography and mineral trioxide aggregate,the preservation rate of type Ⅲ dens invaginatus could be greatly increased.CASE SUMMARY This case report presented a 31-year-old woman with complaints of spontaneous swelling and pain in the right maxillary lateral tooth.With the aid of cone-beam computed tomography,type Ⅲ dens invaginatus with apical periodontitis was diagnosed and confirmed.Three-visit endodontic treatment was performed.In the first visit,the invagination was carefully removed under the dental operation microscope,and chemomechanical preparation was done.In the second visit,mineral trioxide aggregate apical barrier surgery was performed in this tooth.In the third visit,the canal was finally obturated with thermoplastic gutta-percha to recover the crown morphology.A 26-mo follow-up revealed a satisfied outcome both in the radiographic and oral examinations.CONCLUSION In this case,removal of the entire abnormal structure provided great convenience for the follow-up treatment.When confronted with the same clinical case in the future,we can take a similar approach to address it.展开更多
This paper reviewed the literature on newer threedimensional imaging techniques and their applications in diagnosis and treatment planning of various dental anomalies. Developmental anomalies can occur during any of t...This paper reviewed the literature on newer threedimensional imaging techniques and their applications in diagnosis and treatment planning of various dental anomalies. Developmental anomalies can occur during any of the developmental stages and are manifested clinically after the tooth is fully formed. These dental anomalies may involve a single tooth, a group of teeth, or the entire dentition. Two-dimensional diagnosticimaging, including periapical, occlusal, panoramic, or cephalometric radiographs are essential in localization and management of morphological and eruptive disorders. However, due to their inherent limitations such as insufficient precision because of unusual projection errors and lack of information about spatial relationships, these methods are considered unreliable. Thus, the use of newer image acquisition techniques that allow comprehensive three dimensional imaging and visualization of dental abnormalities is highly recommended for making a confirmatory diagnosis. The significance of accurate endodontic, surgical and orthodontic treatment planning in dental abnormalities cannot be overstated as it pertains to critical anatomic landmarks such as proximity to adjacent teeth or the mandibular canal. The precise information on spatial relationships provided by multiplanar imaging helps the dental surgeon to establish more accurate diagnosis, management strategies and also increases the patient safety. This review highlights the use of high-end diagnostic imaging modalities in diagnosis of the various morphologic and eruptive dental abnormalities.展开更多
目的:探讨骨性Ⅲ类错畸形患者双颌手术后软、硬组织变化的相关性、软组织厚度与软硬组织变化的相关性及软组织厚度的变化,以更好地预测术后软组织侧貌。方法:对26例骨性Ⅲ类错畸形成人患者进行锥形束CT(CBCT)扫描,用InVivo5软件将C...目的:探讨骨性Ⅲ类错畸形患者双颌手术后软、硬组织变化的相关性、软组织厚度与软硬组织变化的相关性及软组织厚度的变化,以更好地预测术后软组织侧貌。方法:对26例骨性Ⅲ类错畸形成人患者进行锥形束CT(CBCT)扫描,用InVivo5软件将CBCT转化成头颅侧位片(cephalogram from CBCT,CCB),导入"几何画板"并建立坐标系,进行定点测量。采用SPSS17.0软件包对所有测量值进行统计学分析。结果:各软、硬组织标志点存在线性相关关系,下颌比上颌相关性强。Sn∶A=0.18∶1,UL∶Ui=0.31∶1,LL∶Li=0.80∶1,Si∶B=0.84∶1,Pg'∶Pg=0.90∶1。鼻底厚度、颏部厚度与相应软、硬组织变化无相关关系。唇部厚度与软、硬组织变化呈负相关关系。术后上唇变薄,下唇变厚。结论:软、硬组织变化呈线性相关关系,下颌软、硬组织位移比率大于上颌。鼻底及颏部软组织受硬组织移动影响小,唇部变化受硬组织影响大;唇部越薄,随硬组织移动性越好。展开更多
基金the Priority Academic Program Development of Jiangsu Higher Education Institutions,No.PAPD2018-87.
文摘BACKGROUND Invaginated teeth pose greater challenges in clinical management because of their complex configuration.With advancements in equipment and materials,such as the dental operation microscope,cone-beam computed tomography and mineral trioxide aggregate,the preservation rate of type Ⅲ dens invaginatus could be greatly increased.CASE SUMMARY This case report presented a 31-year-old woman with complaints of spontaneous swelling and pain in the right maxillary lateral tooth.With the aid of cone-beam computed tomography,type Ⅲ dens invaginatus with apical periodontitis was diagnosed and confirmed.Three-visit endodontic treatment was performed.In the first visit,the invagination was carefully removed under the dental operation microscope,and chemomechanical preparation was done.In the second visit,mineral trioxide aggregate apical barrier surgery was performed in this tooth.In the third visit,the canal was finally obturated with thermoplastic gutta-percha to recover the crown morphology.A 26-mo follow-up revealed a satisfied outcome both in the radiographic and oral examinations.CONCLUSION In this case,removal of the entire abnormal structure provided great convenience for the follow-up treatment.When confronted with the same clinical case in the future,we can take a similar approach to address it.
文摘This paper reviewed the literature on newer threedimensional imaging techniques and their applications in diagnosis and treatment planning of various dental anomalies. Developmental anomalies can occur during any of the developmental stages and are manifested clinically after the tooth is fully formed. These dental anomalies may involve a single tooth, a group of teeth, or the entire dentition. Two-dimensional diagnosticimaging, including periapical, occlusal, panoramic, or cephalometric radiographs are essential in localization and management of morphological and eruptive disorders. However, due to their inherent limitations such as insufficient precision because of unusual projection errors and lack of information about spatial relationships, these methods are considered unreliable. Thus, the use of newer image acquisition techniques that allow comprehensive three dimensional imaging and visualization of dental abnormalities is highly recommended for making a confirmatory diagnosis. The significance of accurate endodontic, surgical and orthodontic treatment planning in dental abnormalities cannot be overstated as it pertains to critical anatomic landmarks such as proximity to adjacent teeth or the mandibular canal. The precise information on spatial relationships provided by multiplanar imaging helps the dental surgeon to establish more accurate diagnosis, management strategies and also increases the patient safety. This review highlights the use of high-end diagnostic imaging modalities in diagnosis of the various morphologic and eruptive dental abnormalities.
文摘目的:探讨骨性Ⅲ类错畸形患者双颌手术后软、硬组织变化的相关性、软组织厚度与软硬组织变化的相关性及软组织厚度的变化,以更好地预测术后软组织侧貌。方法:对26例骨性Ⅲ类错畸形成人患者进行锥形束CT(CBCT)扫描,用InVivo5软件将CBCT转化成头颅侧位片(cephalogram from CBCT,CCB),导入"几何画板"并建立坐标系,进行定点测量。采用SPSS17.0软件包对所有测量值进行统计学分析。结果:各软、硬组织标志点存在线性相关关系,下颌比上颌相关性强。Sn∶A=0.18∶1,UL∶Ui=0.31∶1,LL∶Li=0.80∶1,Si∶B=0.84∶1,Pg'∶Pg=0.90∶1。鼻底厚度、颏部厚度与相应软、硬组织变化无相关关系。唇部厚度与软、硬组织变化呈负相关关系。术后上唇变薄,下唇变厚。结论:软、硬组织变化呈线性相关关系,下颌软、硬组织位移比率大于上颌。鼻底及颏部软组织受硬组织移动影响小,唇部变化受硬组织影响大;唇部越薄,随硬组织移动性越好。
