ABSTRACT
It is often very difficult to replant avulsed teeth in the deciduous and mixed dentition when the cortical bone is fractured and there are no adjacent teeth for anchorage. In this article, we describe the management of avulsed maxillary incisors in a 7-year-old boy. The avulsed teeth could be successfully repositioned by intra-alveolar transplantation using the 180° rotation (buccolingual reverse) method, which was originally applied to preserve teeth with relatively deep subgingival crown-root fracture, and a vacuum-formed splint was used for fixation. The avulsed teeth were followed up for 42 months. The post-operative course was uneventful with an aesthetic and functionally stable outcome.
Subject(s)
Dentition, Mixed , Occlusal Splints , Tooth Avulsion , Child , Humans , MaleABSTRACT
PURPOSE: Sinus lifting without graft materials allows new bone formation in the sinus, but the amount of bone formation varies. This study aimed to investigate whether nongrafted sinus lifting using a titanium bone fixation device can promote bone formation in the sinus. MATERIALS AND METHODS: Patients with atrophic posterior maxillae jeopardizing implant stability were included. After nongrafted sinus lifting in combination with implant placement, repositioning of the bone window and additional space-maintaining management were performed by use of the bone fixation device. The primary variables recorded retrospectively included implant survival and preoperative and postoperative alveolar crest height with and without Schneiderian membrane perforation. Independent variables included patient demographics, position and dimension of the implants, complications, and follow-up period. The t test was used for comparing differences in bone levels. The implant survival rate was estimated by uses of Kaplan-Meier statistics. RESULTS: The study included 11 patients (4 men and 7 women) and a total of 21 implants. Radiographically, new bone formation around the implant was generally observed in accordance with the implant apex. Postoperative alveolar crest height (mean, 10.9 ± 2.2 mm) was significantly higher compared with residual alveolar crest height (mean, 4.7 ± 1.4 mm), and no significant difference in bone formation was seen according to membrane perforation. The cumulative survival rate was 95.2%. CONCLUSIONS: This nongrafted sinus-lifting procedure using a bone fixation device could attain predictable bone formation. Additional space-maintaining management using a bone fixation device in a nongrafted sinus lift offers a useful technique for promoting bone formation in the sinus.
Subject(s)
Bone Regeneration , Guided Tissue Regeneration/methods , Internal Fixators , Oral Surgical Procedures, Preprosthetic/methods , Sinus Floor Augmentation/methods , Adult , Aged , Alveolar Ridge Augmentation/instrumentation , Alveolar Ridge Augmentation/methods , Dental Implantation, Endosseous/instrumentation , Dental Implantation, Endosseous/methods , Dental Implants , Dental Prosthesis Retention , Female , Guided Tissue Regeneration/instrumentation , Humans , Jaw, Edentulous/rehabilitation , Jaw, Edentulous/surgery , Kaplan-Meier Estimate , Male , Maxilla/diagnostic imaging , Maxilla/surgery , Middle Aged , Oral Surgical Procedures, Preprosthetic/instrumentation , Osseointegration , Osteogenesis , Osteotomy/methods , Radiography , Retrospective Studies , Sinus Floor Augmentation/instrumentation , Titanium , Treatment Outcome , Vertical DimensionABSTRACT
Reports of injuries caused by kickboxing, one of the contact sports that potentially causes a large number of injuries, are relatively rare. Wearing a mouthguard is obligatory in kickboxing, but the association between maxillofacial injuries and the quality of mouthguards has not been described thus far. In this article, we present a case of mandibular fracture in a 25-year-old male, who was injured during kickboxing despite wearing a mouth formed mouthguard.
