The management of unilateral impacted mandibular second and third molars

A case of impacted mandibular left second and third molars presented for management. The advantages and disadvantages of various treatment methods are discussed. The case was treated by the use of a brass wire to upright the mandibular left second molar after the surgical removal of the mandibular left third molar.     

The surgical-orthodontic management of combined impacted maxillary second and third molars

Background

A correlation between impacted maxillary third molars on the eruption potential of the maxillary second molar has been identified. There is little published evidence available in the literature regarding a treatment modality for this presentation.

Aims 

The aim of this case series is to propose a joint surgical and orthodontic approach for the management of such cases.

Method 

A retrospective search of all patients treated for impacted second and third maxillary molars from 2014 to 2020 revealed 24 cases. Surgical planning was facilitated with the use of a CBCT to help orientate the teeth in 3-D and assess any associated pathology to nearby structures. Twenty-three cases were treated via surgical removal of the impacted third molar and subsequently monitored for spontaneous maxillary second molar eruption.

Conclusion

 All treated cases showed complete or partial spontaneous eruption followed by orthodontic repositioning if required.

     

Role of computerized tomography in management of impacted mandibular third molars

Nerve injury following mandibular third molar (M3) removal is a rare but serious complication. The purpose of this article is to review the role of currently available imaging technologies to facilitate clinical decision-making in the setting of M3 surgery. Given findings suggestive of high risk for inferior alveolar nerve (IAN) injury, the clinician should consider additional imaging to assess better the anatomic relationship of the IAN and M3.     

Accidental displacement of impacted maxillary and mandibular third molars.

Displacement of impacted third molars is frequently mentioned in oral and maxillofacial surgery textbooks, but rarely reported. However, should this complication arise in general practice, the clinician should not embark on potentially complicated and hazardous surgical procedures to retrieve the displaced tooth. Administration of prophylactic broad spectrum antibiotics and urgent referral to an oral and maxillofacial surgeon, is recommended.     

Management of impacted third molars among Nigerian dentists.

Seventy-five Nigerian dentists were interviewed on their approach to the management of impacted third molars. The mean age of the dentists was 34.8 years, with a male/female ratio of 3.4:1. Most of the female dentists were found in the training institutions (p = 0.005). More than half of the dentists (58.7%) practiced in institutions with dental schools (training institutions), majority preferred the buccal approach (92%), and all the dentists (100%) preferred third molar disimpaction under local analgesia. Most dentists (88%) prescribe antibiotics following third molar surgery. Fifty dentists (66.7%) routinely reviewed all patients postoperatively while 12 dentists (16%) were of the opinion that all impacted third molars should be extracted. Only 21 dentists (28%) were aware of any protocol on the management of impacted teeth. More dentists in the training institutions performed third molar surgery less frequently than dentists in other hospitals (p = 0.07) who tend to employ chisels/mallet for bone removal (p = 0.0004). The need for continuing education and the formulation of guidelines in order to assist dentists to make informed decisions is emphasised. This will help conserve scarce resources and enhance the operation of the newly introduced National Health Insurance Scheme.     

Management of bilaterally impacted mandibular second and third molars.

BACKGROUND: The authors present an interdisciplinary approach to treating bilateral impaction of mandibular second molars. CASE DESCRIPTION: A 22-year-old man had a bilateral deep horizontal impaction of his mandibular second molars. The mandibular third molars lay above and parallel to the second molars. After an orthodontic assessment, the authors decided to distally upright the third molars, remove them and then orthodontically reposition the second molars if they were not ankylosed. This combined orthodontic-surgical approach was successful. CLINICAL IMPLICATIONS: This case illustrates the importance of strong cooperation among various specialists to establish the optimal comprehensive treatment plan.     

Dentinal innervation of impacted human third molars

Five totally impacted third molars were studied in the transmission electron microscope for the presence of nervous structures in the dentin before eruption. In contradiction to earlier studies available, nervous structures were found in the predentin and the dentin of the impacted third molars in different parts of the crown and also in the predentin of the root.     

下颌阻生第三磨牙规范化微创拔除

牙及牙槽外科是口腔颌面外科的重要分支.下颌阻生第三磨牙拔除术是牙及牙槽外科最常见的手术.下颌阻生第三磨牙常见的阻生分类有垂直阻生、水平阻生、近中阻生及远中阻生等.术前通过影像学检查以及口内检查评估下颌阻生第三磨牙的拔除难度,进行阻力分析,可有效提高拔牙效率、缩短手术时间、减少拔牙并发症.本文结合临床病例对下颌阻生第三磨牙的规范化微创拔除进行详细阐述,旨在为临床工作者提供帮助.     

Accidental displacement of impacted maxillary third molars

3 cases of accidental displacement of maxillary impacted 3rd molars are presented. 2 were displaced into the maxillary sinus and 1 into the infratemporal fossa. The difficulties in locating these displaced teeth are described and demonstrated on a dry skull model. The mode of treatment is discussed.     

Dentinal innervation of impacted human third molars

Five totally impacted third molars were studied in the transmission electron microscope for the presence of nervous structures in the dentin before eruption. In contradiction to earlier studies available, nervous structures were found in the predentin and the dentin of the impacted third molars in different parts of the crown and also in the predentin of the root.     

Extraoral radiographic technique for third molars

A bstract — A technique using an occlusal film extraorally for obtaining roentgenograms of the third molar regions is described. A case report shows its value in disclosing a dentigerous cyst in the upper third molar region.