Abstract:
OBJECTIVES:Simultaneous, radiation-free registration of the teeth and the upper and lower jaw positions in relation to the extraoral soft tissue could improve treatment planning and documentation. The purpose of this study is to describe a workflow to solve this form of registration and surface acquisition with a mobile device. METHODS:Facial scans of ten healthy participants were taken using a blue-light LED 3D scanner (Artec® Space Spider; Artec® Group; Luxembourg). An impression of the maxillary dentoalveolar arch was taken simultaneously to the 3D photo using a modified impression tray with two different extraoral registration geometries (sphere vs. cross). Following, an impression of the mandibular dentoalveolar arch was taken once. Both impressions were scanned with the 3D scanner. All resulting standard tesselation language (.stl) files of the geometries were compared to the original, virtual .stl files and the root mean square errors (RMSE) were calculated for each surface (Artec Studio 13 Professional × 64; Artec® Group; Luxembourg) to determine which geometry serves as a better reference for intra-extraoral registration. RESULTS:The RMSE between the original geometries and the scanned counterfeits were statistically lower for spherical geometries (p < 0.008). Once scanned and aligned, both geometries enabled an alignment of the intra- and extraoral scan. However, the spherical geometries showed virtually better results without significance (p = 0.70). CONCLUSIONS:The presented study provides a radiation-free solution for simultaneous dentoalveolar correlations in relation to the extraoral soft tissue. Spherical geometries achieved more precise and easier intra-extraoral alignments using the applied mobile 3D scanner and workflow.
journal_name
Head Face Medjournal_title
Head & face medicineauthors
Ritschl LM,Wolff KD,Erben P,Grill FDdoi
10.1186/s13005-019-0212-xsubject
Has Abstractpub_date
2019-11-25 00:00:00pages
28issue
1issn
1746-160Xpii
10.1186/s13005-019-0212-xjournal_volume
15pub_type
杂志文章abstract:BACKGROUND:To investigate the prognostic value of a three-dimensional dynamic quantitative analysis system to measure facial motion (3D ASFM) in acute facial palsy patients and compare it with subjective grading methods and electroneurography. METHODS:We continuously recruited 37 patients with acute (< 1 month) Bell's...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-020-00230-6
更新日期:2020-07-18 00:00:00
abstract:BACKGROUND:Orthodontic treatment with fixed appliances requires - among others - the correct clinical expression of torque, which depends on the precise fitting of archwire and slot. Especially in the lingual technique torque problems become clinically more evident than in labial appliances also with respect to the ver...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/1746-160X-5-27
更新日期:2009-12-15 00:00:00
abstract:BACKGROUND:Apoptosis, or programmed cell death is a form of physiological cell death. It is increased or decreased in the presence of infection, inflammation or tissue remodelling. Previous studies suggest that apoptosis is involved in the pathogenesis of inflammatory periodontal disease. The aim of the present study w...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/1746-160X-2-17
更新日期:2006-06-20 00:00:00
abstract:BACKGROUND:The role of human papillomavirus (HPV) in orthokeratinized odontogenic cysts (OOCs) has rarely been studied. The objective is to describe the clinicopathological findings in a series of OOCs from a Spanish population that were investigated in relation to the possible presence of HPV. METHODS:A clinicopathol...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-018-0167-3
更新日期:2018-07-13 00:00:00
abstract::We describe a case of adenomatoid odontogenic tumor (AOT) associated with odontoma occurring in the posterior mandible of a 32-year-old man. Although calcifications are commonly found in the AOT, the presence of rudimentary dental structures is a very rare phenomenon. Cases with similar aspects have been described as ...
journal_title:Head & face medicine
pub_type: 杂志文章,评审
doi:10.1186/1746-160X-9-20
更新日期:2013-08-09 00:00:00
abstract:INTRODUCTION:This study was performed to examine craniofacial structures in persons with hypodontia and to reveal any differences, that may occur, when agenetic teeth are only found in the maxilla, the mandible or in both jaws. The groups consistent of 50 children (33 girls, 17 boys) aged between 9 and 13.5 years were ...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/1746-160X-7-23
更新日期:2011-12-06 00:00:00
abstract:OBJECTIVE:It is widely known that stress conditioning can protect microcirculation and induce the release of vasoactive factors for a period of several hours. Little, however, is known about the long-term effects of stress conditioning on microcirculation, especially on the microcirculation of the periosteum of the cal...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/1746-160X-7-22
更新日期:2011-11-18 00:00:00
abstract:BACKGROUND:A pneumatized superior turbinate is a rare cause of headache. Nasal endoscopy alone, does not provide us with adequate information for this inaccessible area of the superior nasal cavity. A coronal computed tomography (CT) must be obtained to confirm the diagnosis. CASE PRESENTATION:We present a 40-year-old...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/1746-160X-3-3
更新日期:2007-01-09 00:00:00
abstract:OBJECTIVE:To analyze the interradicular trabecular bone density of the lateral maxilla regarding the insertion of temporary anchorage devices (TADs). MATERIAL AND METHODS:The material consisted of tissue blocks of autopsy material from 20 subjects (17 male, 3 female, 16 - 63y). The specimens comprised the dentated alv...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-015-0058-9
更新日期:2015-02-07 00:00:00
abstract:BACKGROUND:In this study, we report a rare case of an adult patient with essential palatal tremors (EPT) presenting as nasal clicks, instead of otic clicks or objective pulsatile tinnitus in common EPT. CASE PRESENTATION:Nasal endoscopic examination and EMG recordings of the soft palate muscles were performed to confi...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-016-0129-6
更新日期:2016-11-22 00:00:00
abstract:INTRODUCTION:It has been shown that Low Level Laser (LLL) has a positive effect on bone formation. The aim of this study was to evaluate the effect of low level laser on condylar growth during mandibular advancement in rabbits. MATERIALS AND METHODS:Continuous forward mandibular advancement was performed in fourteen m...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/1746-160X-8-4
更新日期:2012-02-23 00:00:00
abstract:BACKGROUND:The apparent interactions between the mechanisms of action of non-steroidal anti-inflammatory drugs (NSAIDS) and steroids suggest that co-therapy may provide beneficial inflammatory and pain relief in the absence of side effects. The aim of the study was to compare the effect of co-administered dexamethasone...
journal_title:Head & face medicine
pub_type: 杂志文章,随机对照试验
doi:10.1186/1746-160X-1-11
更新日期:2005-11-07 00:00:00
abstract:BACKGROUND:The purpose of this study was to assess the influence of head and neck pathologies on the detection rate, configuration and diameter of the thoracic duct (TD) and right lymphatic duct (RLD) in computed tomography (CT) of the head and neck. METHODS:One hundred ninety-seven patients were divided into the subg...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-016-0108-y
更新日期:2016-03-31 00:00:00
abstract:BACKGROUND:Schwannomas are uncommon benign tumors of the external auditory canal. The clinical features, the differential diagnosis, and the surgical treatment of these lesions are discussed. CASE PRESENTATION:A 51-year-old patient presented with a mass obliterating the external auditory meatus. Excisional biopsy was ...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/1746-160X-3-6
更新日期:2007-01-15 00:00:00
abstract:BACKGROUND:Functional and aesthetic mandibular reconstruction after ablative tumor surgery continues to be a challenge even after the introduction of microvascular bone transfer. Complex microvascular reconstruction of the resection site requires accurate preoperative planning. In the recent past, bone graft and fixati...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/1746-160X-3-5
更新日期:2007-01-15 00:00:00
abstract:BACKGROUND:The most common malignant salivary gland tumors that affect both adult and children is mucoepidermoid carcinoma. It usually affects both minor and major salivary glands but parotid gland is considering the most common site in which this tumor arises. CD44, a trans-membrane glycoprotein, is an adhesion molecu...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-016-0102-4
更新日期:2016-01-29 00:00:00
abstract:BACKGROUND:To determine three-dimensional spatial orbit skeletal changes in adolescents over a 19 to 24 months observation period assessed through cone-beam computed tomography (CBCT). METHODS:The sample consisted of 50 adolescents aged 11 to 17. All were orthodontic patients who had two CBCTs taken with an interval o...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-016-0130-0
更新日期:2016-11-10 00:00:00
abstract::There is no doubt that the main reason for an internal grauloma is a traumatic event. The trauma may be physical or chemical as in the case of caries or coronal pulpectomy. In most of the cases it is diagnosed by hazard or, when in case of fracture or mobility, extraction is the only therapy to be performed. If diagno...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-015-0077-6
更新日期:2015-06-12 00:00:00
abstract:INTRODUCTION:The aim of this study was to compare the shear bond strength of Biodentine, ProRoot MTA (MTA), glass ionomer cement (GIC) and composite resin (CR) on dentine. METHODS:120 extracted human third molars were embedded in cold-cured-resin and grinned down to the dentine. For each material 30 specimens were pro...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-015-0071-z
更新日期:2015-04-19 00:00:00
abstract:BACKGROUND:Periodontal health is of great concern for periodontists and orthodontists in the inter-disciplinary management of patients with bimaxillary protrusion. The aim of present study is to investigate changes in the alveolar bone in the maxillary incisor region and to explore its relationship with displacement of...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-020-00242-2
更新日期:2020-11-20 00:00:00
abstract:BACKGROUND:To report the outcome of guided endodontic treatment (GET) of a case of dentin dysplasia with pulp canal calcification (PCC) and apical periodontitis based on the use of a 3D-printed template designed by merging cone-beam computed tomography (CBCT) and surface scan data. CASE PRESENTATION:A 12-year old fema...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-020-00240-4
更新日期:2020-11-17 00:00:00
abstract:INTRODUCTION:This study determined the amount and severity of EARR (external apical root resorption) after orthodontic treatment with self-ligating (SL) and conventional (Non-SL) brackets. Differences regarding rate of extraction cases, appointments and treatment time were evaluated. MATERIAL AND METHODS:213 patients ...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/1746-160X-10-2
更新日期:2014-01-23 00:00:00
abstract:INTRODUCTION:The annual examination of first graders' oral health as stipulated by law aimed to reach every child in Rhineland-Palatinate (Germany) in their first year of school. We intended to evaluate the first graders' oral health based on the examination data for 2013/2014. METHODS:Instructed examiners measured th...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-015-0091-8
更新日期:2015-10-02 00:00:00
abstract:INTRODUCTION:The aim of this study was to compare solubility, microhardness, radiopacity, and setting time of Biodentine with ProRoot MTA. METHODS:Solubility in distilled water, radioopacity, and setting time were evaluated in accordance with International Standard ISO 6876:2001. In addition, the solubility in Phospha...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-015-0074-9
更新日期:2015-05-02 00:00:00
abstract::Melanotic neuroectodermal tumor of infancy (MNTI) is a rare condition that occurs normally in the anterior maxilla of infants aged <1 year. The use of clinical and imaging tools for MNTI is extremely important to prevent problems with function as well as the aesthetic features in a breastfeeding child. Brazil is a mul...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/1746-160X-9-35
更新日期:2013-11-25 00:00:00
abstract:BACKGROUND:Langerhans cell histiocytosis (LCH), previously known as Histiocytosis X, is an infrequent disease that congregates a wide spectrum of clinical presentations with variable systemic involvement. Unification of these diseases under only one category is based on the almost identical histopathologic features of ...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-016-0118-9
更新日期:2016-06-02 00:00:00
abstract:BACKGROUND:Oral Health-Related Quality of Life (OHRQoL) is an important aspect of quality of life. Acute illnesses, as well as chronic diseases, can have a strong, persisting impact on an individual's quality of life. This study evaluates OHRQoL of patients with odontogenic fascial space abscesses, the underlying condi...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-019-0201-0
更新日期:2019-06-21 00:00:00
abstract:BACKGROUND:Successful treatment of patients with multiple bilateral impactions can be an orthodontic challenge, but few reports on treatment planning and execution exist. CASE PRESENTATION:In this case report, we describe the successful orthodontic treatment of a 16.3-year old female patient without systemic or geneti...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/s13005-016-0122-0
更新日期:2016-07-25 00:00:00
abstract:BACKGROUND:With the 2005 WHO classification of salivary gland tumours and its increasingly recognized diagnostic entities, the frequency of adenocarcinoma (NOS) has decreased significantly. CASE PRESENTATION:This paper describes a fast growing adenocarcinoma (NOS), originating from the minor salivary glands of the lef...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/1746-160X-4-16
更新日期:2008-07-30 00:00:00
abstract:OBJECTIVES:Primary surgery in patients with complete unilateral and bilateral cleft lip and palate restricts transverse and sagittal maxillary growth. Additional surgical maxillary advancement might become necessary after completion of growth. The aim of this study was to determine the extent of maxillary deficiency at...
journal_title:Head & face medicine
pub_type: 杂志文章
doi:10.1186/1746-160X-10-26
更新日期:2014-06-20 00:00:00