1,720,982 research outputs found
Minimally invasive surgical approach in a large mandibular solitary cyst : case report and review of the literature
No full textSolitary bone cyst (SBC) is an intraosseus radiolucent lesions that defers from real cysts for the fact that peripheral epithelial lining is totally absent. It could be classified as a psudocyst and occurs most frequently in young patients. In most cases SBC doesn’t cause symptoms and it is often diagnosed accidentally during routine radiographic examination. A right diagnosis of this disease is also complicated because there are no pathognomonic radiographic signs and symptoms: so this form of pseudocyst is often misdiagnosed as a common odontogenic cyst. Despite numerous studies, the pathogenesis of the SBC is not yet established: the most widely accepted theory is that it could be the result of an intramedullary necrosis determined by a trauma. In this article we report a case of SBC in child treated with a minimal surgical approach. This new kind of treatment is much more conservative than the traditional one, it can be performed as outpatients, under local anesthesia and with few postoperative discomfort: For these reasons this minimal invasive technique appears to be particulary suitable for pediatric patients
An uncommon clinical feature of IAN injury after third molar removal : a delayed paresthesia case series and liteature review
No full textAfter an inferior alveolar nerve (IAN) injury, the onset of altered sensation usually begins immediately after surgery. However, it sometimes begins after several days, which is referred to as delayed paresthesia. The authors considered three different etiologies that likely produce inflammation along the nerve trunk and cause delayed paresthesia: compression of the clot, fibrous reorganization of the clot, and nerve trauma caused by bone fragments during clot organization. The aim of this article was to evaluate the etiology of IAN delayed paresthesia, analyze the literature, present a case series related to three different causes of this pathology, and compare delayed paresthesia with the classic immediate symptomatic paresthesia
Dislocazione di un impianto dentale nel seno mascellare: caso clinico e revisione della letteratura
No full textOBIETTIVI. La dislocazione degli impianti dentali a livello del seno mascellare è una seria complicanza che spesso segue un’inadeguata riabilitazione del mascellare superiore. Scopo dello studio è descrivere un caso di migrazione implantare nel seno mascellare. MATERIALI E METODI. Il paziente è stato sottoposto a una riabilitazione del mascellare superiore attraverso metodiche
di rigenerazione ossea, tra cui un rialzo di seno bilaterale. Dopo 6 mesi di attesa per la guarigione
degli innesti ossei è stata eseguita la chirurgia implantare. Ai successivi 6 mesi dall’inserimento delle fixture è emersa la presenza di una fistola suppurante a livello dell’impianto 1.6: una radiografia endorale di controllo ha confermato la dislocazione dello stesso. A distanza di
7 giorni si è proceduto al recupero chirurgico della fixture implantare in anestesia locale attraverso l’antrostomia precedentemente eseguita per il rialzo di seno.RISULTATI E CONCLUSIONI. Una volta ottenuta la guarigione del sito chirurgico, confermata sia clinicamente sia radiograficamente,
si è proceduto alla protesizzazione degli impianti restanti. La migrazione implantare è stata causata, in questo caso, dalla scarsa stabilità primaria dell’impianto associata a una qualità non ottimale dell’osso innestato.Objectives
The displacement of dental implants into the maxillary sinus is a potential complication, often following an insufficient rehabilitation of the posterior precemaxillary area. The aim of our study is to describe a case of implant migration through the bone graft.
Materials and methods
The patient received a total superior rehabilitation through bone regeneration methods, including bilateral sinus lifts. Implants were placed after a 6-month maturation period. At 6 months after fixture insertion, a suppurating fistula in 1.6 area appeared: a radiographic exam showed the implant displacement. One week later, the surgical recovery of the displaced implant was performed under local anaesthesia through the antrostomy previously created for the sinus lifts.
Results and conclusions
After clinical and radiographic evaluation of the surgical site healing, the remaining prosthetic phase was initiated. It is our opinion that, in this case, implant migration was caused by low primary stability associated with inadequate bone quality
Large buccal bifurcation cyst in a child : a case report and literature review
No full textBackground WHO defines the mandibular buccal bifurcation cyst as a cyst occurring near the cervical margin of the lateral aspect of a root as a consequence of inflammatory process in a periodontal pocket. The pathogenesis of these cysts is still debated, but they are most likely originated from reduced enamel epithelium or from inflammatory proliferation of epithelial cell rests of Malassez that come from the superficial mucosa of a tooth in eruption. The aim of this article was to describe a case of large buccal bifurcation cyst of a permanent mandibular first molar. Case report A 6-year-old boy was referred to Department of Oral Riabilitation of the Istituto Stomatologico Italiano, University of Milan, Italy, with the complaint of hard swelling over the buccal gingiva and a deep probing depth located on the buccal aspect. Radiograph revealed a well-defined semilunar-shaped radiolucency, marked by a fine radiopaque line on the buccal aspect of the partially-erupted lower right first molar and it was large enough to include a small part of the crown of the second right molar. As reported in the literature the treatment of choice is enucleation and curettage of the lesion without extraction of the vital involved tooth. This procedure has shown excellent results in both the short- and long-term. The definitive diagnosis of paradental cysts can be assessed by histopathologic analysis
Behavior of endosseous one-piece yttrium stabilized zirconia dental implants placed in posterior areas
No full textAim. Considering that zirconia dental implants are indicated for the rehabilitation of highly esthetic areas, the aim of this work was to investigate the functional behavior of these implants positioned in the posterior regions of the jaws. Methods. The study included 6 patients with 14 zirconia implants positioned in posterior (molar) areas of the jaws. Immediately after surgery, all implants were restored with temporary crowns or bridges. Clinical radiographic evaluation was performed 6 months after surgery and subsequently every year. At these follow-up visits, periodontal indexes were recorded and peri-apical radiographs were taken in order to calculate marginal bone loss. Results. The success and survival rates were 100%. The modified bleeding index (mBI) and modified plaque index (mPLI) were respectively equal to 0.57±0.51 and 0.29 ± 0.47 at 4-year follow-up. The overall mean probing depth of the implants was 3.13±0.87 mm. The mean marginal bone loss was +0.665 mm 4 years after surgery. Conclusion. Considering the limits of our study, as regards to the data concerning peri-implant tissue health, marginal bone loss and survival and success rates of zirconium implants placed in posterior areas, we can conclude that the data reported are very encouraging although the number of implants observed is still limited
Approccio minimamente invasivo nel rialzo di seno mascellare per via crestale = Minimally invasive way in maxillary sinus lift through crestal approach
No full textLo scopo del nostro lavoro è di presentare due casi clinici trattati con una tecnica chirurgica che permetta di eseguire un rialzo di seno mascellare in modo minimamente traumatico e invasivo per il paziente, con una relativa facilità esecutiva per l’operatore e che minimizzi l’insorgenza di effetti avversi.
Metodi. Due casi di edentulismo del mascellare superiore diatorico sono stati trattati mediante la tecnica SinCrest® (Meta, Reggio Emilia, Italia) con contestuale inserimento di impianti osteointegrati. Il successo dell’intervento viene verificato con un controllo radiografico a distanza di 6 mesi.
Risultati. La sequenza di frese della tecnica utilizzata permette un approccio graduale e un avvicinamento progressivo al pavimento del seno mascellare, mantenendo il corretto asse per il posizionamento degli impianti. Gli stop disponibili in varie lunghezze garantiscono di lavorare alla lunghezza di lavoro prefissata evitando il sovrafresaggio e l’osteotomo ad avvitamento elimina la necessità di applicare forze percussive e vibratorie tipiche del classico osteotomo. La sonda incorporata al dispositivo permette un monitoraggio costante delle resistenze residue e permette un sollevamento delicato della membrana di Schneider. L’intervento di rialzo di seno così gestito presenta minori effetti avversi e complicanze rispetto alla metodica di Summers e mostra minore discomfort per il paziente sia nella fase intraoperatoria che postoperatoria.
Conclusioni. SinCrest®(Meta, Reggio Emilia, Italia) può essere considerata una buona alternativa tra le tecniche per il rialzo di seno mascellare minimamente invasive con approccio crestale, mostrando indipendenza dalle capacità dell’operatore, facilità di esecuzione e scarsi effetti avversi.The aim of this work is to present two clinical cases treated with a surgical procedure which allows a maxillary sinus lift in a minimally traumatic and invasive way, easy to use by the surgeon and with few adverse effects.
Methods. Two cases of posterior upper maxillary edentulism were treated with SinCrest® technique (Meta, Reggio Emilia, Italy) with implant placement during the same surgery. The success of the procedure was checked with an intraoral X-Ray 6 months after the operation.
Results. The drills sequence suggested by the described procedure allows a gradual and progressive approach to the maxillary sinus floor, maintaining the correct axis for implant placement. The stops, avaible in different heights, ensure to work at the right working lenght and avoid overdrilling. The screwing osteotome does not need vibratory or percussive forces, typical of classical osteotomes. The built-in probe allows a constant monitoring of residual strenght and a soft lifting of the Schneiderian mucose. A sinus lift procedure like this shows less adverse effects and complictions than Summers technique and less discomfort for the patient, both during and after the surgery.
Conclusions. SinCrest® (Meta, Reggio Emilia, Italy) could be considered a very good alternative among minimally invasive sinus lift procedure with crestal approach, and shows to be indipendent by clinician’s skills, easy to execute and with few adverse effects
Trattamento combinato parodontale e restaurativo per la riabilitazione del settore anteriore
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