Analysis of causes for non-stone parotid obstructions
Parotid obstructions can cause repeated swelling of the glands. Previously, duct stones were thought to be the main cause of obstructions, but salivary gland endoscopy examinations have revealed the absence of stones or foreign bodies in the duct system of the parotid glands with obstructive symptom...
| Main Authors: | , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal of Prevention and Treatment for Stomatological Diseases
2019-11-01
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| Series: | 口腔疾病防治 |
| Subjects: | |
| Online Access: | http://www.kqjbfz.com/EN/10.12016/j.issn.2096-1456.2019.11.002 |
| _version_ | 1811214893894860800 |
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| author | TAO Qian HUANG Yun |
| author_facet | TAO Qian HUANG Yun |
| author_sort | TAO Qian |
| collection | DOAJ |
| description | Parotid obstructions can cause repeated swelling of the glands. Previously, duct stones were thought to be the main cause of obstructions, but salivary gland endoscopy examinations have revealed the absence of stones or foreign bodies in the duct system of the parotid glands with obstructive symptoms. Diseases of the parotid gland with obstructive symptoms include chronic recurrent parotitis, non-stone chronic obstructive parotitis, Sjögren′s syndrome, IgG4-related parotitis and radiation-induced parotitis. The mechanism of obstructions is unknown, and the disease course is prolonged. In this paper, based on a brief analysis of duct stenosis, distortion and mucus emboli, which may lead to parotid obstructions, a new perspective is emphasized: the duct system of the parotid and flowing saliva constitute a microflow field. Based on the principle of fluid mechanics, the flow of saliva in the flow field can be affected by the confluence, diameter changes, and twist of the ducts. This outcome results in changes in the low velocity zone, backflow, counterflow and turbulence; affects saliva flow and normal discharge; and causes symptoms of parotid obstruction. An analysis of the possible mechanisms of parotid obstruction using two variables, duct anatomy and saliva traits, helps explain the causes of nonstone parotid obstructions. |
| first_indexed | 2024-04-12T06:13:08Z |
| format | Article |
| id | doaj.art-be3176c1db784473b3cef13c969d7510 |
| institution | Directory Open Access Journal |
| issn | 2096-1456 2096-1456 |
| language | zho |
| last_indexed | 2024-04-12T06:13:08Z |
| publishDate | 2019-11-01 |
| publisher | Editorial Department of Journal of Prevention and Treatment for Stomatological Diseases |
| record_format | Article |
| series | 口腔疾病防治 |
| spelling | doaj.art-be3176c1db784473b3cef13c969d75102022-12-22T03:44:39ZzhoEditorial Department of Journal of Prevention and Treatment for Stomatological Diseases口腔疾病防治2096-14562096-14562019-11-01271168969410.12016/j.issn.2096-1456.2019.11.002Analysis of causes for non-stone parotid obstructionsTAO Qian0HUANG Yun1Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of StomatologyHospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of StomatologyParotid obstructions can cause repeated swelling of the glands. Previously, duct stones were thought to be the main cause of obstructions, but salivary gland endoscopy examinations have revealed the absence of stones or foreign bodies in the duct system of the parotid glands with obstructive symptoms. Diseases of the parotid gland with obstructive symptoms include chronic recurrent parotitis, non-stone chronic obstructive parotitis, Sjögren′s syndrome, IgG4-related parotitis and radiation-induced parotitis. The mechanism of obstructions is unknown, and the disease course is prolonged. In this paper, based on a brief analysis of duct stenosis, distortion and mucus emboli, which may lead to parotid obstructions, a new perspective is emphasized: the duct system of the parotid and flowing saliva constitute a microflow field. Based on the principle of fluid mechanics, the flow of saliva in the flow field can be affected by the confluence, diameter changes, and twist of the ducts. This outcome results in changes in the low velocity zone, backflow, counterflow and turbulence; affects saliva flow and normal discharge; and causes symptoms of parotid obstruction. An analysis of the possible mechanisms of parotid obstruction using two variables, duct anatomy and saliva traits, helps explain the causes of nonstone parotid obstructions.http://www.kqjbfz.com/EN/10.12016/j.issn.2096-1456.2019.11.002parotidinflammationnon-stone parotid obstructionsparotid ductsalivary gland endoscopymicro-flow fieldhydrodynamics |
| spellingShingle | TAO Qian HUANG Yun Analysis of causes for non-stone parotid obstructions 口腔疾病防治 parotid inflammation non-stone parotid obstructions parotid duct salivary gland endoscopy micro-flow field hydrodynamics |
| title | Analysis of causes for non-stone parotid obstructions |
| title_full | Analysis of causes for non-stone parotid obstructions |
| title_fullStr | Analysis of causes for non-stone parotid obstructions |
| title_full_unstemmed | Analysis of causes for non-stone parotid obstructions |
| title_short | Analysis of causes for non-stone parotid obstructions |
| title_sort | analysis of causes for non stone parotid obstructions |
| topic | parotid inflammation non-stone parotid obstructions parotid duct salivary gland endoscopy micro-flow field hydrodynamics |
| url | http://www.kqjbfz.com/EN/10.12016/j.issn.2096-1456.2019.11.002 |
| work_keys_str_mv | AT taoqian analysisofcausesfornonstoneparotidobstructions AT huangyun analysisofcausesfornonstoneparotidobstructions |