Functional Evaluation of a <scp>CAD</scp>/<scp>CAM</scp> Prosthesis for Immediate Defect Repair after Total Maxillectomy: A Case Series of 18 Patients with Maxillary Sinus Cancer

Jiang, Feifei; Hou, Yan; Lu, Li; Ding, Xiaoxu; Li, Wei; Yan, Aihui

doi:10.1111/jerd.12117

Cited by 17 publications

(18 citation statements)

References 10 publications

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“…The results of occlusal force measurements were more convincing at this time. Our data were also consistent with Jiang et al and evidences that the recovery of occlusal forces in the 6 months post‐operatively is valuable. Ma indicated that a complete denture could restore 15%‐25% of the occlusal force of natural dentition.…”

Section: Discussionsupporting

confidence: 93%

“…Murakami et al reported that the improvement of masticatory functions and the QoL is associated with the improvement in participants' occlusal force. Jiang et al reported that the completion of jaw reconstruction takes 6 months after operation, and the occlusal relationship stabilises after the replacement of the permanent prosthesis. The results of occlusal force measurements were more convincing at this time.…”

Section: Discussionmentioning

confidence: 99%

“…In order to improve the accuracy of surgery, multidisciplinary treatment, consisting of prosthodontics and digital imaging, is indispensable to design and fabricate the prosthesis. Recently, Jiang et al reported the insertion of fabricated prostheses immediately after repairing Brown III defects, significantly improving eyeball collapse and facial deformity. Additionally, prostheses were used to repair anterior maxillary defects with satisfactory appearance and speech intelligibility…”

Section: Introductionmentioning

confidence: 99%

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Digital planning workflow for partial maxillectomy using an osteotomy template and immediate rehabilitation of maxillary Brown II defects with prosthesis

Wang

Yang

Gan

et al. 2019

J of Oral Rehabilitation

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Background There is increasing evidence of benefits for the rehabilitation of Brown II defects with prosthesis in surgery. However, the current literature is sparse for maxillary tumour resection using osteotomy templates. Objectives To assess the accuracy of maxillectomy using a custom fabricated osteotomy template and to evaluate the prosthesis for surgical accuracy, appearance and functioning (speech, swallowing and occlusal force). Methods Ten patients with Brown II defects caused by tumour resection were treated with precise partial maxillectomy using an osteotomy template. The immediate rehabilitation of the Brown II defect was completed with a prefabricated prosthesis. The post‐operative three‐dimensional images and the pre‐operative virtual images were superimposed, and average deviation and maximum deviation were calculated. Speech intelligibility, swallowing, appearance and University of Washington Quality of Life Questionnaire (UW‐QoL) were examined at 1, 3 and 6 months after surgery. Occlusal force was examined post‐operatively at 6 months. Results The maximum deviation between the actual and virtual surgery was 5.12 ± 0.44 mm, with an average of 1.02 ± 0.17 mm. Speech intelligibility, swallowing and UW‐QoL improved significantly (P < .05) after wearing the prosthesis. The recovery index of the occlusal force on the affected side was 20.19%‐32.28%. The skewed degree of the mouth corner, the difference in the height of the left and right lips, the maximum deviation distance and the change area volume decreased significantly (P < .05). Conclusion The precise rehabilitation of maxillary Brown II defects can be achieved using a prosthesis fabricated with an osteotomy template. The prosthesis restored appearance and functional capabilities (such as speech and occlusal force).

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Digital planning workflow for partial maxillectomy using an osteotomy template and immediate rehabilitation of maxillary Brown II defects with prosthesis

Wang

Yang

Gan

et al. 2019

J of Oral Rehabilitation

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“…Maxillofacial reconstruction surgery focuses on rebuilding the original shape of the affected region [20]. All functions of the upper jaw-including ventilation through the paranasal sinus system, chewing, biting, and swallowing-are associated with the original shape of the maxillary bone [20,21]. Maxillary and zygomaticomaxillary complex fracture reduction focuses on restoring the malar prominence, zygomatic arch, and maxillary buttresses [22].…”

Section: Discussionmentioning

confidence: 99%

A retrospective computed tomography analysis of maxillary fractures and the clinical outcomes of their unreduced parts

Chung

Tak

Lim

et al. 2019

Arch Craniofac Surg

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Background: Some parts of a maxillary fracture-for example, the medial and posterior wallsmay remain unreduced because they are unapproachable or hard to deal with. This study aimed to investigate the self-healing process of unreduced maxillary membranous parts of fractures through a longitudinal computed tomography (CT) analysis of cases of unilateral facial bone injuries involving the maxillary sinus walls. Methods: Thirty-two patients who had undergone unilateral facial bone reduction surgery involving the maxillary sinus walls without reduction of the medial and posterior walls were analyzed in this retrospective chart review. Preoperative, immediate postoperative, and 3-month postoperative CT scans were analyzed. The maxillary sinus volume was calculated and improvements in bone continuity and alignment were evaluated. Results: The volume of the traumatized maxillary sinuses increased after surgery, and expanded significantly by 3 months postoperatively (p < 0.05). The significant preoperative volume difference between the normal and traumatized sides (p = 0.024) resolved after surgery (p > 0.05), and this resolution was maintained at 3 months postoperatively (p > 0.05). The unreduced parts of the maxillary bone showed improved alignment and continuity (in 75.0% and 90.6% of cases, respectively), and improvements in bone alignment and bone continuity were found to be correlated using the Pearson chi-square test (p = 0.002). Conclusion: Maxillary wall remodeling through self-healing occurred concomitantly with an increase in sinus volume and simultaneous improvements in bone alignment and continuity. Midfacial surgeons should be aware of the natural course of unreduced fractured medial and posterior maxillary walls in complex maxillary fractures.

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“…Rapid prototyping technology, better known as 3-dimensional (3D) printing, is widely used for preoperative planning, procedure rehearsal and custom prosthetic design in clinical practice as well as an educational tool for teaching and to enhance communication between the patient and doctor [ 2 , 3 ]. In dentistry, 3D printing technology is currently used in implant surgery [ 4 , 5 ], oral and maxillofacial surgery [ 6 , 7 ], orthognathic surgery [ 8 , 9 ], prosthodontics [ 10 , 11 ] and endodontics [ 12 – 14 ].…”

Section: Introductionmentioning

confidence: 99%

Direct resin composite restoration of maxillary central incisors using a 3D-printed template: two clinical cases

Xia

Cai

et al. 2018

BMC Oral Health

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BackgroundThree-dimensional (3D) printing technology is used widely in dentistry for applications including implant surgery, oral and maxillofacial surgery, orthognathic surgery, endodontics and prosthodontics. Using a 3D-printed template makes performing the repair procedure faster and more convenient. The aesthetic restoration of anterior teeth can recover facial beauty, enhance speaking and chewing functions and improve the quality of life of the patient.Case presentationThis article describes two kinds of clinical cases including fractured teeth and dental caries. In both, a 3D-printed template was used for direct resin composite restoration of maxillary central incisors. A 3D-printed template was built using the following 3-step process: data acquisition was conducted via intra-oral scanning, virtual modeling was performed using an imaging process, and manufacturing was performed using a 3D printer. Aesthetically restoring the maxillary incisors with the assistance of the 3D-printed template achieved the anticipated results, and the patients were very satisfied with the effect.ConclusionsThe direct resin composite restoration of maxillary central incisors using a 3D-printed template represents a rapid, convenient, aesthetic and functional option for treating maxillary central incisors. A 3D-printed template is therefore an acceptable and reliable alternative to traditional direct composite restoration of maxillary central incisors including fractured teeth and dental caries.

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Functional Evaluation of a CAD/CAM Prosthesis for Immediate Defect Repair after Total Maxillectomy: A Case Series of 18 Patients with Maxillary Sinus Cancer

Cited by 17 publications

References 10 publications

Digital planning workflow for partial maxillectomy using an osteotomy template and immediate rehabilitation of maxillary Brown II defects with prosthesis

Digital planning workflow for partial maxillectomy using an osteotomy template and immediate rehabilitation of maxillary Brown II defects with prosthesis

A retrospective computed tomography analysis of maxillary fractures and the clinical outcomes of their unreduced parts

Direct resin composite restoration of maxillary central incisors using a 3D-printed template: two clinical cases

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